Year annual % growth 1961 18.005023322569087 1962 6.756263682802242 1963 -1.80005696382797 1964 6.897151806949367 1965 2.8977642717603658 1966 4.6830503111486195 1967 5.889168765743079 1968 9.867262952566719 1969 -1.7710994673710587 1970 5.717686475048495 1971 -2.927317459655569 1972 9.295931955840018 1973 -18.51196792831034 1974 5.2042637341436375 1975 2.3014854208692554 1976 3.432822443309135 1977 12.946273830155988 1978 12.943071965628363 1979 16.659873649887928 1980 -9.829097155501216 1981 -2.576603919795943 1982 9.919464421834093 1983 -11.475607549900502 1984 7.428474114441414 1985 4.102596620272038 1986 -13.339424394700771 1987 -3.577578632929189 1988 -6.669825418230857 1989 18.815167727574504 1990 -11.67789646672145 1991 5.775528431080687 1992 4.369546861806924 1993 3.1079350097755025 1994 19.39322610173923 1995 5.501095290251911 1996 8.89978976874562 1997 13.098813098813082 1998 6.442028069288156 1999 6.94502187642297 2000 7.799107721357302 2001 6.800384668223657 2002 7.820941600205813 2003 6.330529706513957 2004 14.715081134906939 2005 14.16135855146527 2006 1.1823166552433122 2007 6.6617273497036535 2008 7.781769107110975 2009 -3.2923326213449116 2010 3.23210205635948 2011 5.489002628302671 2012 3.1061221992009678 2013 -0.5646939121587167 2014 -3.803059501679826 2015 4.261882390483436 2016 11.75035282515175 2017 8.806859246973971 2018 3.3631895062893733 2019 0.3280817701533607 2020 -15.991747238965985 2021 14.376866031012227 2022 4.5148025738725295 2023 5.12813626689406