Year Month PDO 1979 1 0.13 1979 2 -0.43 1979 3 -0.59 1979 4 -0.39 1979 5 -0.40 1979 6 -0.48 1979 7 -0.42 1979 8 -0.46 1979 9 -0.46 1979 10 -0.23 1979 11 -0.33 1979 12 -0.09 1980 1 -0.07 1980 2 0.51 1980 3 0.62 1980 4 0.46 1980 5 0.40 1980 6 0.10 1980 7 0.05 1980 8 0.17 1980 9 0.38 1980 10 0.43 1980 11 0.44 1980 12 0.49 1981 1 0.91 1981 2 1.00 1981 3 1.10 1981 4 1.16 1981 5 1.26 1981 6 1.32 1981 7 1.38 1981 8 1.31 1981 9 1.02 1981 10 0.92 1981 11 0.97 1981 12 0.99 1982 1 0.63 1982 2 0.64 1982 3 0.55 1982 4 0.59 1982 5 0.41 1982 6 0.28 1982 7 0.27 1982 8 0.40 1982 9 0.60 1982 10 0.42 1982 11 0.59 1982 12 0.68 1983 1 0.53 1983 2 0.92 1983 3 1.46 1983 4 1.47 1983 5 1.42 1983 6 1.66 1983 7 1.60 1983 8 1.20 1983 9 1.31 1983 10 1.26 1983 11 1.37 1983 12 1.47 1984 1 1.68 1984 2 1.41 1984 3 1.77 1984 4 1.85 1984 5 1.50 1984 6 1.50 1984 7 1.63 1984 8 1.47 1984 9 1.52 1984 10 1.55 1984 11 1.56 1984 12 1.31 1985 1 1.22 1985 2 1.15 1985 3 0.62 1985 4 0.12 1985 5 0.02 1985 6 -0.05 1985 7 0.06 1985 8 0.03 1985 9 0.22 1985 10 -0.04 1985 11 -0.03 1985 12 0.32 1986 1 0.47 1986 2 0.79 1986 3 1.34 1986 4 1.23 1986 5 1.07 1986 6 0.86 1986 7 0.77 1986 8 1.00 1986 9 1.06 1986 10 1.15 1986 11 1.39 1986 12 1.60 1987 1 1.37 1987 2 1.26 1987 3 1.33 1987 4 1.29 1987 5 1.35 1987 6 1.30 1987 7 1.43 1987 8 1.80 1987 9 2.15 1987 10 1.96 1987 11 1.79 1987 12 1.30 1988 1 0.60 1988 2 0.58 1988 3 0.77 1988 4 0.71 1988 5 0.36 1988 6 0.45 1988 7 0.38 1988 8 0.17 1988 9 0.12 1988 10 0.49 1988 11 0.52 1988 12 0.37 1989 1 -0.37 1989 2 -0.41 1989 3 -0.41 1989 4 -0.33 1989 5 -0.48 1989 6 -0.45 1989 7 -0.49 1989 8 -0.62 1989 9 -0.58 1989 10 -0.66 1989 11 -0.60 1989 12 -0.15 1990 1 -0.25 1990 2 -0.65 1990 3 -1.04 1990 4 -1.03 1990 5 -0.87 1990 6 -1.01 1990 7 -1.23 1990 8 -1.07 1990 9 -1.15 1990 10 -1.01 1990 11 -0.95 1990 12 -1.16 1991 1 -1.20 1991 2 -0.84 1991 3 -0.95 1991 4 -1.33 1991 5 -1.30 1991 6 -1.50 1991 7 -1.40 1991 8 -1.02 1991 9 -1.18 1991 10 -0.94 1991 11 -0.65 1991 12 -0.67 1992 1 -0.68 1992 2 -0.33 1992 3 -0.14 1992 4 0.05 1992 5 0.17 1992 6 0.17 1992 7 0.23 1992 8 0.10 1992 9 0.19 1992 10 0.43 1992 11 0.50 1992 12 0.17 1993 1 -0.19 1993 2 0.13 1993 3 0.22 1993 4 0.26 1993 5 0.37 1993 6 0.67 1993 7 0.72 1993 8 1.02 1993 9 1.10 1993 10 1.26 1993 11 1.36 1993 12 0.89 1994 1 0.58 1994 2 0.22 1994 3 0.08 1994 4 0.08 1994 5 0.15 1994 6 0.14 1994 7 0.06 1994 8 -0.04 1994 9 -0.08 1994 10 0.12 1994 11 -0.12 1994 12 -0.45 1995 1 -0.28 1995 2 0.15 1995 3 0.38 1995 4 0.40 1995 5 0.56 1995 6 0.65 1995 7 0.82 1995 8 0.48 1995 9 0.50 1995 10 0.22 1995 11 0.25 1995 12 0.88 1996 1 1.15 1996 2 0.97 1996 3 0.98 1996 4 1.14 1996 5 1.31 1996 6 1.28 1996 7 1.31 1996 8 1.14 1996 9 1.15 1996 10 1.28 1996 11 1.00 1996 12 0.90 1997 1 1.12 1997 2 1.20 1997 3 0.94 1997 4 1.06 1997 5 1.17 1997 6 1.28 1997 7 1.25 1997 8 1.52 1997 9 1.32 1997 10 1.07 1997 11 1.31 1997 12 1.18 1998 1 0.95 1998 2 1.44 1998 3 1.31 1998 4 1.07 1998 5 0.90 1998 6 0.95 1998 7 0.85 1998 8 0.81 1998 9 0.64 1998 10 0.38 1998 11 0.39 1998 12 0.11 1999 1 0.03 1999 2 -0.69 1999 3 -0.91 1999 4 -1.00 1999 5 -1.23 1999 6 -1.58 1999 7 -1.59 1999 8 -1.17 1999 9 -1.06 1999 10 -1.20 1999 11 -1.31 1999 12 -1.35 2000 1 -1.57 2000 2 -1.60 2000 3 -1.22 2000 4 -0.91 2000 5 -0.75 2000 6 -0.86 2000 7 -0.75 2000 8 -0.63 2000 9 -0.66 2000 10 -0.77 2000 11 -1.27 2000 12 -0.93 2001 1 -0.57 2001 2 -0.81 2001 3 -0.67 2001 4 -0.75 2001 5 -0.86 2001 6 -0.84 2001 7 -0.81 2001 8 -0.50 2001 9 -0.60 2001 10 -0.64 2001 11 -0.64 2001 12 -0.96 2002 1 -0.80 2002 2 -1.03 2002 3 -1.08 2002 4 -1.03 2002 5 -1.15 2002 6 -0.98 2002 7 -1.08 2002 8 -0.94 2002 9 -0.75 2002 10 -0.73 2002 11 -0.45 2002 12 -0.26 2003 1 -0.01 2003 2 0.18 2003 3 0.36 2003 4 0.40 2003 5 0.28 2003 6 0.22 2003 7 0.17 2003 8 -0.06 2003 9 -0.19 2003 10 0.18 2003 11 0.03 2003 12 -0.07 2004 1 0.13 2004 2 0.14 2004 3 0.02 2004 4 -0.12 2004 5 0.23 2004 6 0.21 2004 7 -0.03 2004 8 0.06 2004 9 0.01 2004 10 -0.29 2004 11 -0.47 2004 12 -0.29 2005 1 -0.26 2005 2 -0.01 2005 3 0.00 2005 4 0.05 2005 5 0.18 2005 6 0.14 2005 7 0.29 2005 8 0.23 2005 9 -0.04 2005 10 -0.25 2005 11 -0.19 2005 12 0.08 2006 1 -0.01 2006 2 -0.19 2006 3 -0.56 2006 4 -0.44 2006 5 -0.57 2006 6 -0.57 2006 7 -0.52 2006 8 -0.74 2006 9 -0.82 2006 10 -0.59 2006 11 -0.61 2006 12 -0.58 2007 1 -1.01 2007 2 -1.09 2007 3 -1.19 2007 4 -0.93 2007 5 -0.86 2007 6 -0.68 2007 7 -0.63 2007 8 -0.79 2007 9 -0.80 2007 10 -1.11 2007 11 -1.17 2007 12 -1.04 2008 1 -1.36 2008 2 -1.59 2008 3 -1.31 2008 4 -1.43 2008 5 -1.39 2008 6 -1.50 2008 7 -1.66 2008 8 -1.57 2008 9 -1.64 2008 10 -1.52 2008 11 -1.55 2008 12 -1.48 2009 1 -1.72 2009 2 -2.09 2009 3 -2.50 2009 4 -2.40 2009 5 -2.22 2009 6 -1.95 2009 7 -1.90 2009 8 -2.15 2009 9 -1.79 2009 10 -1.49 2009 11 -1.64 2009 12 -1.37 2010 1 -1.05 2010 2 -0.89 2010 3 -1.25 2010 4 -1.22 2010 5 -1.02 2010 6 -1.10 2010 7 -1.15 2010 8 -1.43 2010 9 -1.55 2010 10 -1.44 2010 11 -1.38 2010 12 -1.49 2011 1 -1.38 2011 2 -1.24 2011 3 -1.36 2011 4 -1.13 2011 5 -1.24 2011 6 -1.21 2011 7 -1.42 2011 8 -1.49 2011 9 -1.69 2011 10 -1.67 2011 11 -1.78 2011 12 -1.86 2012 1 -1.97 2012 2 -1.84 2012 3 -2.14 2012 4 -2.13 2012 5 -1.96 2012 6 -1.87 2012 7 -1.92 2012 8 -2.00 2012 9 -1.98 2012 10 -1.84 2012 11 -1.58 2012 12 -1.37 2013 1 -1.48 2013 2 -1.58 2013 3 -1.84 2013 4 -1.71 2013 5 -1.52 2013 6 -1.50 2013 7 -1.85 2013 8 -1.61 2013 9 -1.23 2013 10 -1.41 2013 11 -1.37 2013 12 -1.26 2014 1 -0.84 2014 2 -0.76 2014 3 -0.62 2014 4 -0.54 2014 5 -0.38 2014 6 -0.45 2014 7 -0.44 2014 8 -0.19 2014 9 0.19 2014 10 0.40 2014 11 0.33 2014 12 0.29 2015 1 0.18 2015 2 0.49 2015 3 0.44 2015 4 0.48 2015 5 0.32 2015 6 0.18 2015 7 -0.02 2015 8 0.17 2015 9 0.42 2015 10 0.51 2015 11 0.18 2015 12 0.12 2016 1 -0.11 2016 2 0.08 2016 3 0.31 2016 4 0.31 2016 5 0.26 2016 6 0.29 2016 7 0.03 2016 8 0.05 2016 9 0.11 2016 10 0.09 2016 11 0.15 2016 12 -0.09 2017 1 -0.30 2017 2 -0.16 2017 3 -0.27 2017 4 -0.02 2017 5 -0.06 2017 6 -0.25 2017 7 -0.30 2017 8 -0.19 2017 9 -0.34 2017 10 -0.28 2017 11 -0.29 2017 12 -0.32 2018 1 -0.40 2018 2 -0.51 2018 3 -0.90 2018 4 -0.84 2018 5 -0.92 2018 6 -0.98 2018 7 -0.96 2018 8 -1.03 2018 9 -1.29 2018 10 -0.99 2018 11 -0.80 2018 12 -0.81 2019 1 -1.04 2019 2 -1.24 2019 3 -1.48 2019 4 -1.18 2019 5 -0.96 2019 6 -1.12 2019 7 -1.06 2019 8 -0.88 2019 9 -0.61 2019 10 -0.63 2019 11 -0.56 2019 12 -0.33 2020 1 -1.07 2020 2 -1.37 2020 3 -1.80 2020 4 -1.76 2020 5 -1.60 2020 6 -1.50 2020 7 -1.53 2020 8 -1.62 2020 9 -1.41 2020 10 -1.31 2020 11 -1.47 2020 12 -1.23 2021 1 -1.48 2021 2 -1.79 2021 3 -2.15 2021 4 -2.13 2021 5 -2.13 2021 6 -2.08 2021 7 -2.10 2021 8 -2.12 2021 9 -2.09 2021 10 -2.31 2021 11 -2.38 2021 12 -2.15 2022 1 -2.02 2022 2 -1.87 2022 3 -1.89 2022 4 -2.04 2022 5 -2.19 2022 6 -2.13 2022 7 -2.03 2022 8 -1.86 2022 9 -1.62 2022 10 -1.40 2022 11 -1.64 2022 12 -1.48 2023 1 -1.31 2023 2 -1.67 2023 3 -2.09 2023 4 -2.17 2023 5 -2.10 2023 6 -2.12 2023 7 -2.38 2023 8 -2.24 2023 9 -2.17 2023 10 -1.80 2023 11 -1.58 2023 12 -1.72 2024 1 -1.85 2024 2 -1.73 2024 3 -1.88