Year annual % 1961 -2.2508038585209005 1962 18.092105263157894 1963 17.13091922005571 1964 13.674197384066588 1965 6.2761506276150625 1966 7.480314960629922 1967 17.312271062271062 1968 12.44994340579993 1969 8.817526760798033 1970 6.931154150399347 1971 15.883451357526802 1972 19.972200056629514 1973 18.144524545142467 1974 18.225799421772166 1975 39.40289520251671 1976 9.36900842291774 1977 25.27852501133444 1978 10.336225282519953 1979 8.423021360400822 1980 14.825550909555375 1981 16.74234635929549 1982 25.13951519722695 1983 20.42750051896694 1984 18.79432081297058 1985 23.711336740747964 1986 21.874663181415134 1987 43.798765601834134 1988 34.75505039150903 1989 49.720290944207186 1990 51.950680209812376 1991 71.56326442435382 1992 61.55816762931403 1993 21.172028162740165 1994 15.23671013957903 1995 24.073754940072746 1996 21.088057136875157 1997 10.850183679462065 1998 7.791964059303121 1999 10.21938404424323 2000 9.952135540588168 2001 16.854418970671055 2002 8.123631775863794 2003 9.476143645470609 2004 9.670901625620603 2005 6.010533467261875 2006 16.98896130027922 2007 13.04230408826706 2008 12.23806339055043 2009 10.456090944699305 2010 15.810269548209153 2011 13.323518534113058 2012 12.893871493429963 2013 5.665083026938492 2014 3.6060673684393376 2015 3.672146471892246 2016 5.429132696925743 2017 -0.6915785080849007 2018 5.982354872454418 2019 14.379729597693014 2020 14.502493743840006 2021 13.770762143639148 2022 15.497525644020088 2023 22.085856606648235