Year annual % growth 1971 4.708716935526837 1972 10.082782347227564 1973 11.564877257273196 1974 -8.50728904683244 1975 -0.6796622683699098 1976 2.900129338501074 1977 2.849567655050663 1978 7.924965038187253 1979 5.896102968032409 1980 -0.38529280983038916 1981 2.347443749422794 1982 -0.008803349674550986 1983 1.1866859623733745 1984 3.758341961698747 1985 5.259411910222582 1986 6.446758994163389 1987 9.236460114733049 1988 12.215346089482608 1989 7.291658716699814 1990 6.10917906216946 1991 3.1742243596748096 1992 -2.2236401215552632 1993 -4.529415282789415 1994 -1.7887197477499939 1995 3.205237240710673 1996 6.80642797643452 1997 -1.918843293178469 1998 -4.270427173824686 1999 -1.0889364278064306 2000 0.6293867027779925 2001 -1.3492139389190072 2002 -4.835895340127848 2003 -0.6303863516444892 2004 0.2926344326299244 2005 2.9677350091107826 2006 0.39913303363243813 2007 -2.1524688556726943 2008 -3.8221505612407043 2009 -10.02369551825916 2010 -1.3034917146750047 2011 2.219931721906775 2012 2.772145817218046 2013 4.112451347996711 2014 2.2215737314547965 2015 2.2809369487881668 2016 1.1595443397876437 2017 1.6103019297724046 2018 0.597895742970735 2019 0.5479868160691979 2020 -3.5834860546360403 2021 -0.13030665499475447 2022 -1.3829784070396443