Year annual % growth 1961 17.60627072731124 1962 0.8502093487691837 1963 7.540775258938908 1964 5.199921210061163 1965 19.29226736656973 1966 0.17264651372876472 1967 5.2989471063203695 1968 6.103621701105297 1969 4.431480338667896 1970 9.821668365989837 1971 1.1371695498015697 1972 4.61843504985147 1973 4.137197801433416 1974 5.082563919409381 1975 2.171249946213379 1976 4.167528012995419 1977 13.637626511564306 1978 8.35632705811436 1979 2.3949586615332095 1980 -1.8148049045679073 1981 -8.533183713501614 1982 -9.599172756280112 1983 5.599069406405292 1984 7.248292574192504 1985 4.301903588917895 1986 5.252014640211854 1987 3.7299817556938137 1988 2.149697088145359 1989 5.127224028389207 1990 4.143627073563792 1991 -0.9516768600734054 1992 9.638811171466543 1993 9.500191117599968 1994 5.168445827501245 1995 2.2146278404619295 1996 1.7320914338839941 1997 4.804569240469306 1998 4.540353601993274 1999 1.7438109424068955 2000 0.9651293889935744 2001 2.351103022029008 2002 5.5305254710043386 2003 4.868337440890883 2004 2.554240145159966 2005 4.815793056933828 2006 5.158802569827429 2007 7.672424077315327 2008 5.9517975775591765 2009 0.2728516266393939 2010 5.890454046079441 2011 6.837817932571539 2012 7.254927217082567 2013 1.9070560593894328 2014 4.820473142207618 2015 4.675584751948222 2016 3.753638565012608 2017 5.5546127999762405 2018 1.9491400827440089 2019 1.6914138228312652 2020 -6.936927184600464 2021 8.344996690628875 2022 3.4260201088253126 2023 5.406399417189817