Year annual % growth 1971 9.04220727793576 1972 6.863182318579632 1973 5.196432778839593 1974 7.50893895078795 1975 1.1948771962233309 1976 0.2069371673784559 1977 3.6686109109334666 1978 8.846965164084324 1979 5.479599173542127 1980 17.064707537243336 1981 10.383590134263983 1982 6.154233103299589 1983 -3.5628888218092243 1984 2.185489520001326 1985 3.9719639370847233 1986 2.967443953131948 1987 -3.0358140683588886 1988 -10.47467851554282 1989 1.8984677587846335 1990 7.4270896423259956 1991 9.702019415907273 1992 8.167592690786847 1993 2.3622828174209047 1994 2.4313982552119313 1995 1.6660757833921735 1996 4.460178608142968 1997 7.3310759121768285 1998 7.8161407679032635 1999 2.3518231716380456 2000 5.004302856355338 2001 2.7222211471270583 2002 2.1664339787040348 2003 3.4174372083662945 2004 8.60516892080281 2005 8.33505498258016 2006 9.191816693538144 2007 12.401627797160756 2008 8.714679517762718 2009 1.8490668620068504 2010 5.3530943329800635 2011 10.58958715886233 2012 7.154680637051314 2013 3.61467776573663 2014 3.0628551902413648 2015 4.0729873919586055 2016 4.416693230034596 2017 5.239766578416564 2018 4.3264047682995965 2019 4.273886457444419 2020 -10.46489492405712 2021 11.58830376557691 2022 10.3836501488843 2023 6.396817670198814