Annual annual % growth
1971 7.848517713397669
1972 1.4136895920119628
1973 9.899602032842196
1974 -6.853516099882853
1975 3.0019587027643126
1976 -18.364305519423112
1977 -14.80285219897894
1978 -13.461762003948792
1979 -2.8005658185393827
1980 43.69509941332632
1981 56.94513967249975
1982 49.267531160558974
1983 -15.412621112909491
1984 -3.113746928268853
1985 -20.378153578889467
1986 -23.524321625788986
1987 -16.55669159495082
1988 -34.72495161483218
1989 -25.979121043684003
1990 1.7641664824297436
1991 51.170367616931856
1992 3.770216691713003
1993 -30.063232785040412
1994 13.506836812555605
1995 -91.28017691482697
1996 30.835764314347614
1997 234.46006650718482
1998 62.50176121195946
1999 -21.459656953106148
2000 -95.58755668626092
2001 1432.8926702874817
2002 37.396390940698524
2003 91.22797899059373
2004 -30.71372740769756
2005 36.53317365903524
2006 24.359171332559157
2007 5.534897521427354
2008 18.074914748262216
2009 20.956618276477172
2010 32.603670578280486
2011 -28.561480659588938
2012 61.653193508505495
2013 23.601745780981403
2014 10.264481591344165
2015 -17.80995824731916
2016 -21.9890282985897
2017 -32.09840970518266
2018 10.492298957430052
2019 -14.132027457853766
2020 -20.256551968823345
2021 32.559928628515564