Year annual % 1963 -12.547945205479452 1964 -3.0388471177944862 1965 -3.0694668820678515 1966 -7.3 1967 -6.328658755843223 1968 13.78119001919386 1969 0.2901484480431849 1970 25.375092511606002 1971 2.084842630604524 1972 12.576880618199022 1973 22.27592164553711 1974 47.517757580386466 1975 11.447358202386807 1976 31.992288216301596 1977 15.24179923975785 1978 21.275101168206458 1979 1.4417568024635783 1980 10.282763586066359 1981 22.076401863791837 1982 20.93628987641988 1983 4.0650313529994975 1984 5.171081212914267 1985 4.5257317599855105 1986 11.18092993204827 1987 -0.2501909099300736 1988 0.4993834697792029 1989 10.298586664872904 1990 -4.814055382914048 1991 5.817395377577564 1992 3.59087104994766 1993 -12.580834543437772 1994 38.68877196099996 1995 7.423778580354097 1996 11.692862360017823 1997 3.7329667087863463 1998 8.487028398719977 1999 13.138215417503773 2000 10.819400406707889 2001 -8.622793398949977 2002 7.299122773971085 2003 33.04224547442756 2004 14.77802400332052 2005 9.322847360716702 2006 12.253625600065499 2007 12.929871923333899 2008 9.429861986180589 2009 13.210790798949926 2010 11.42106510014411 2011 7.498016987559462 2012 6.19571965579916 2013 8.039141986043782 2014 11.119737616394174 2015 19.56991722015166 2016 13.724342470412685 2017 9.253146775563183 2018 14.149556328890075 2019 8.219451673968535 2020 12.338537786332129 2021 15.34059835498795 2022 21.570022398547508 2023 9.609138867394051