Year annual % growth 1966 0.3035409291715325 1967 9.874112694081632 1968 2.5007526110852467 1969 4.747422966322759 1970 5.622509406360237 1971 -0.6532590443755737 1972 -2.0385203151834617 1973 4.721114524735668 1974 0.2481064227620351 1975 7.2480350042041835 1976 -1.0411828570269392 1977 6.2661124109757935 1978 2.691627632316383 1979 -6.66721963521519 1980 8.488259038472677 1981 3.988603027127354 1982 1.252336639191526 1983 5.604675996175246 1984 0.8810390363239691 1985 3.3230997424425084 1986 2.2208542204729724 1987 -0.6495275434304659 1988 9.921726258140524 1989 2.4133013124749 1990 3.51232741104441 1991 0.7346602546226961 1992 3.6793410343741897 1993 2.024055260999475 1994 3.3770277424861206 1995 0.7326220608518526 1996 8.195576654192948 1997 -0.6143640503344443 1998 4.821579069693357 1999 3.258247133767256 2000 1.7445675475475042 2001 4.660758764998604 2002 1.1540921402774842 2003 6.97630707140695 2004 2.5998045929873825 2005 4.774077548109702 2006 3.9513984818386803 2007 4.702257657377302 2008 2.175952869437239 2009 2.0187845331257392 2010 5.395814710571216 2011 4.6205180805392985 2012 2.807580860116829 2013 4.355810250638115 2014 2.1684487150803307 2015 2.173399964036477 2016 3.731606934906509 2017 4.930436139799042 2018 2.6629257568460787 2019 3.8067638147835794 2020 3.009805269409412 2021 3.7174441596641543 2022 3.2984260627274153 2023 1.5315181028810514