Year annual % growth 1961 7.4577763476852255 1962 7.149553455292178 1963 12.94546615189789 1964 15.272792383201363 1965 2.533375757918563 1966 11.438556442645421 1967 9.788085711292354 1968 11.999143479396807 1969 20.389323756606004 1970 7.286163209775992 1971 7.249275007783851 1972 14.76153195148342 1973 14.950758652803955 1974 5.512030660779985 1975 -8.88208985400756 1976 18.597433907331535 1977 1.7965902400213025 1978 4.430246140812443 1979 8.802741084331743 1980 5.146066256818685 1981 -1.3967270601798987 1982 3.5623363483264967 1983 -2.6986064172273387 1984 3.4015929394137743 1985 4.744087754993558 1986 6.664912543331852 1987 7.671901123380678 1988 8.443713776300086 1989 8.068385101549012 1990 5.0421993357514765 1991 2.955856669977706 1992 1.7668580736281996 1993 -3.3192301544695937 1994 8.862599208638414 1995 7.522724521316462 1996 2.445829188627215 1997 7.975598051799523 1998 11.900408081157778 1999 6.950599801938992 2000 15.353488744711626 2001 2.38176789119575 2002 1.9455852698148277 2003 0.8936170418712521 2004 6.204036884813306 2005 6.320066914024622 2006 5.6005840281220856 2007 5.755701820398841 2008 1.2950026348983243 2009 -9.354562790125058 2010 8.892522591601846 2011 5.837368344767498 2012 0.2002236468697305 2013 2.4184810606745515 2014 4.8986863901047855 2015 5.898053682846836 2016 2.9287653774902935 2017 4.486842018206147 2018 3.0791561246974055 2019 2.3443206261587903 2020 -12.324496699238992 2021 9.389210589110462 2022 8.558675308088823 2023 -0.4261348325643439