Year annual % growth 1965 7.7960756832512885 1966 9.182512595482109 1967 0.9774734544007373 1968 6.0242739914498316 1969 8.305139732122413 1970 13.346741409559911 1971 0.7248565388101866 1972 16.945277361319285 1973 6.336335373866092 1974 -2.1128458617157406 1975 -1.524155556239947 1976 100.98805578137745 1977 -42.879589296826325 1978 5.765721600348471 1979 4.094350311582502 1980 0.21769245992497588 1981 -3.0879739336491383 1982 -0.17829398130476193 1983 2.9088311091831827 1984 4.673824105526748 1985 4.5054007959067945 1986 4.179699895734075 1987 5.750402506418311 1988 3.987244110688266 1989 1.0723542330295004 1990 2.096505823627041 1991 -1.1657335685250843 1992 3.740203305656806 1993 4.996634004039251 1994 5.009973641091349 1995 -11.828157595698897 1996 26.60088098947817 1997 5.787346541874427 1998 4.419389587073667 1999 5.401502021952638 2000 3.047149251588749 2001 0.9928575046856025 2002 2.560565782213999 2003 3.7205037290622016 2004 8.500229863378664 2005 2.720199035244164 2006 1.0198018398738924 2007 1.3494956339508377 2008 -1.1672514235661566 2009 -2.8692080149679526 2010 1.4473882444095238 2011 1.521146481950879 2012 2.4136669975446807 2013 1.6885170637147127 2014 -3.117287047255985 2015 -1.1971644931388283 2016 -1.1061604778381309 2017 1.7280499862361864 2018 2.65796476755618 2019 4.414182282129573 2020 -4.9988124384746015 2021 22.200243720272027 2022 6.603376640421629 2023 3.21539876545296