Year annual % 1961 -7.519198961670739 1962 5.570492760609241 1963 7.370998439118836 1964 3.2988186585768204 1965 -3.5142689334096957 1966 11.09230394034148 1967 -1.9358396528946713 1968 4.980825751364222 1969 -2.3508068366275126 1970 6.3633482364594585 1971 13.532410271479534 1972 3.777202952442863 1973 7.399933291997755 1974 -0.5243329177146592 1975 0.8194919659391076 1976 13.948404879294387 1977 -8.136689268156871 1978 20.442131525171646 1979 14.804234909608141 1980 -5.963248106975996 1981 -5.038637875350062 1982 -2.6457586259871277 1983 -0.495741989576473 1984 3.689946194594839 1985 9.402858159883749 1986 0.13575284876831972 1987 0.5156880109240802 1988 4.934241655603657 1989 9.628727322633537 1990 6.929141266488841 1991 1.400771564566483 1992 6.682334596714881 1993 5.090562684550591 1994 -5.003024139516768 1995 -0.9814598392103449 1996 8.395845453031697 1997 10.884795738661609 1998 0.4829676289563025 1999 -0.1094376965627788 2000 3.3267145637140345 2001 -2.356613335458732 2002 -1.8348069544047831 2003 -4.816178330427064 2004 -2.4900082529000827 2005 8.501897213232596 2006 7.153345153701025 2007 8.321654206636993 2008 -4.877126230027443 2009 -2.8614242579447335 2010 1.6273701359067303 2011 12.42658765900093 2012 2.1041282650332818 2013 -0.5991333045680278 2014 2.4576124391604566 2015 6.512325509964882 2016 10.62779004126888 2017 5.652986795779086 2018 3.9428069298557205 2019 4.5815511358634495 2020 -12.49013744744579 2021 -0.254097866449726 2022 -4.8001108665391 2023 3.2521519327219295