Year annual % growth 1961 2.263872915710465 1962 5.754894508786947 1963 2.998227855745526 1964 8.261587053645087 1965 8.102072357314327 1966 11.696905014013865 1967 3.283144406995447 1968 7.830647524290413 1969 4.979046657988164 1970 38.73442124057368 1971 9.384161233817096 1972 10.928975314355753 1973 16.82332161141595 1974 21.538411635062786 1975 -3.1311437979177725 1976 -1.228077628930535 1977 -2.8445127047274923 1978 5.9518740976777025 1979 11.769438022341532 1980 13.2151880759763 1981 -1.4286243019178784 1982 -21.26594176137776 1983 -9.017683319049567 1984 2.032677613174826 1985 -1.5317752707830863 1986 -1.5673277013445386 1987 5.663786757295526 1988 5.882810979388054 1989 3.313879099379264 1990 14.678551016572612 1991 13.473305442527206 1992 16.127037860099108 1993 7.4922132869542395 1994 13.75419814646608 1995 -2.2073110796254696 1996 8.618742811201201 1997 17.46818390648859 1998 7.805296848772343 1999 -3.425178366828831 2000 12.928864224511557 2001 0.053999214284061736 2002 -3.820179493294944 2003 3.455274042001804 2004 9.355294639262056 2005 7.64985042419417 2006 10.645321526377245 2007 10.736801577746192 2008 9.003468034758527 2009 -13.501998216993087 2010 22.59421914257338 2011 9.20789058376512 2012 3.2622547098990253 2013 4.771428450300206 2014 1.7509119744667885 2015 -1.29581162710015 2016 -1.3168859767679493 2017 6.278938997337264 2018 4.871175692776376 2019 -0.7939524403804938 2020 -12.72104222069612 2021 16.969134485431894 2022 7.722761601604432 2023 -56.962721517173634