Year annual % 1961 -3.9178927054339994 1962 1.6103815293989783 1963 1.7650482681740272 1964 4.860465613391 1965 4.278413975827505 1966 5.140917510543574 1967 -0.4914000119111961 1968 2.8387531290395174 1969 7.401858189112005 1970 8.24964466693119 1971 6.011045843177513 1972 5.569295048186461 1973 7.608375605576299 1974 3.0206150341673776 1975 2.531959426177906 1976 4.889146210684814 1977 4.72313285895072 1978 5.105218280079953 1979 6.191240585503067 1980 5.874791867509714 1981 -1.225808852157087 1982 0.37390610946192737 1983 0.21191731766757016 1984 6.295309824125155 1985 5.701040592329278 1986 4.208227555643134 1987 4.76724450097565 1988 3.4978002019374657 1989 3.207809213200676 1990 -1.1370515765259483 1991 -0.8227035744815936 1992 -0.4288378951658558 1993 3.1365072025124903 1994 3.3003064264848945 1995 4.531068750780534 1996 4.039545952898038 1997 4.577306925948491 1998 1.8971505776798097 1999 3.741840789337232 2000 6.177275278083044 2001 4.435262337286844 2002 5.2743815005813275 2003 6.130003618027928 2004 7.492217001919926 2005 7.054314050925242 2006 8.585349464237808 2007 9.510355916136362 2008 6.232285580140356 2009 3.0368775550944065 2010 7.376213957391741 2011 6.51284906910962 2012 5.051380629069683 2013 4.843018900609806 2014 4.491013369439784 2015 4.0286210637325155 2016 3.8262136970144525 2017 4.640984255036159 2018 4.8524152925400585 2019 4.170049548258675 2020 -0.14137660479804026 2021 7.220549161730432 2022 3.0824209962001277 2023 4.122561348865375