Annual annual % growth
1971 11.181271593125715
1972 4.5906156161131975
1973 13.362095739139377
1974 -3.922391499549221
1975 5.91255205702555
1976 -16.330465507572043
1977 -12.717555092899232
1978 -11.380905546148597
1979 -0.5190696963192494
1980 46.99277312521383
1981 60.48719346171211
1982 52.546798070388235
1983 -13.63306989300959
1984 -0.6373994031542196
1985 -17.959115826242254
1986 -21.214057624033728
1987 -14.051620874407206
1988 -32.79585698422842
1989 -23.816279509459733
1990 4.671529802604482
1991 55.43151726827949
1992 6.659201863560199
1993 -28.03223078984368
1994 16.790708603609957
1995 -91.04140935371466
1996 34.379954844246214
1997 241.39983427884272
1998 66.01339320916082
1999 -19.33399994569602
2000 -95.41587905077847
2001 1491.620875127285
2002 40.64993276276164
2003 96.59513956830443
2004 -28.31913328743127
2005 41.53617459062443
2006 29.115838811172637
2007 9.492632954525789
2008 22.05238934990561
2009 25.914488506501826
2010 38.23065890276581
2011 -26.205911786648358
2012 66.20356586084034
2013 26.612528522378412
2014 12.931872660037328
2015 -15.82329679404694
2016 -20.103013418764718
2017 -30.45525851913041
2018 13.169610595314339
2019 -12.085628084438667
2020 -18.37501168450781
2021 35.666506642880904