Year annual % growth 1971 4.430339341440259 1972 5.324948622547481 1973 5.033126354340723 1974 1.882577941505346 1975 3.133275907103922 1976 4.261199636120153 1977 3.27205405278535 1978 3.8815849991470657 1979 3.5834041934502636 1980 1.9258179536187043 1981 1.6302786815056436 1982 1.6540824980176012 1983 2.964190113513581 1984 3.0333565537396225 1985 3.469494481343375 1986 3.9354958812461547 1987 3.312888826446354 1988 3.5491682298752494 1989 3.1574408488708627 1990 2.9684991255043656 1991 1.5252787179052802 1992 2.479577421575158 1993 1.9038608215296904 1994 2.680445543187247 1995 2.392544342082644 1996 3.1931070933224532 1997 3.0979105013047956 1998 3.1027327248379635 1999 3.860223123481049 2000 4.055655690043608 2001 2.726029558555325 2002 2.701366248394791 2003 2.700744861512021 2004 3.474094495752283 2005 3.65483208759467 2006 3.4885322291560357 2007 3.8317261159635905 2008 2.120998669441903 2009 0.793019281621028 2010 2.920376338807202 2011 2.701902632851798 2012 2.2360650561226407 2013 2.353425242174339 2014 2.6058584368453523 2015 2.8771713363584723 2016 2.8142609489437262 2017 3.0013859945940737 2018 3.0897127723166875 2019 2.6707527947606735 2020 -3.102116608552649 2021 6.302618035650582 2022 3.249029623987454