Year annual % growth 1961 20.878677104311706 1962 -0.9100269067482856 1963 5.505813689108649 1964 23.47842741951098 1965 8.450752875365069 1966 22.078304122172227 1967 11.170236981083391 1968 0.47837217450552316 1969 1.4285756271423367 1970 12.435074566137146 1971 18.303599160368833 1972 16.603327042178663 1973 -4.530291490664652 1974 7.796833888130351 1975 -4.717184983918685 1976 24.092116040742155 1977 11.170593549935305 1978 12.44014878284736 1979 10.425347830813394 1980 7.707118467713684 1981 9.160942691519608 1982 11.659377981579993 1983 -5.98325795869107 1984 17.25816398858653 1985 9.788935602875341 1986 15.41645112644541 1987 21.805612791414376 1988 27.171064823297456 1989 21.53782513904892 1990 13.394159714514586 1991 15.140019924974652 1992 13.807414113140055 1993 12.984926480841423 1994 13.104921935199783 1995 15.37044161829553 1996 -4.483675235831441 1997 9.051943428113532 1998 10.7914200122663 1999 8.63596923886405 2000 15.83187016145709 2001 -0.020392510442079015 2002 5.887283886842681 2003 9.133827797853328 2004 14.631080472749545 2005 7.759716665459692 2006 10.787678093859071 2007 8.893749799074442 2008 6.2636244731870505 2009 -12.140285866237676 2010 14.220261710275636 2011 9.509416476089427 2012 3.66167901291044 2013 2.5143377406728433 2014 0.3454677273641238 2015 1.2501522278465842 2016 2.6960527430770753 2017 5.180845360964653 2018 3.351049869951723 2019 -2.9535534165111272 2020 -19.681220439003383 2021 11.08906666461651 2022 6.1421292205195925 2023 2.141747552769772