Year annual % growth 1971 2.0701775795327677 1972 5.485093900486191 1973 9.78529457166455 1974 -2.1516913189734197 1975 -10.513604561782856 1976 9.089889219709704 1977 3.841851030200985 1978 4.932304630602374 1979 6.469005555587913 1980 -2.277038653240794 1981 -1.3764502295770882 1982 -4.024452669790406 1983 2.958389672660971 1984 10.661052103318 1985 3.9569670728423034 1986 4.479135618214201 1987 4.898683718138457 1988 8.242099941205197 1989 6.5195733700695655 1990 3.080228654662932 1991 -1.1538770385658523 1992 -3.6132011130133748 1993 -3.070105541522736 1994 3.895623549138463 1995 3.8775539458322186 1996 4.167917301373407 1997 4.69473901873512 1998 2.7574472339029654 1999 4.44901677326186 2000 6.2468311023356335 2001 -1.243755130772314 2002 -0.9964326054866888 2003 2.9820649346682444 2004 5.290115956027506 2005 4.270312280171879 2006 4.959427241126164 2007 2.941213102746687 2008 -2.5656948363826473 2009 -16.504723358869924 2010 8.13898602140577 2011 4.795279414805904 2012 1.3525191047053227 2013 2.258871960985175 2014 4.162863145952798 2015 3.8518638188816254 2016 1.295240287617787 2017 4.642619723032041 2018 3.4859984197565836 2019 2.8006330596611804 2020 -4.701290775974854 2021 5.835405608521498 2022 4.348871608502819