Year annual % growth 1961 -9.755901106509484 1962 3.909215401126076 1963 3.391988817129615 1964 3.379742775078981 1965 -11.056207790842763 1966 28.622275779067024 1967 -3.9436180529280165 1968 -14.360976127704504 1969 -13.035135077997083 1970 17.914959823374346 1971 18.02848349328434 1972 -1.8884137060783672 1973 8.075095930135404 1974 -12.758085910578558 1975 1.2794612799452523 1976 1.8962194407642983 1977 27.395613530775705 1978 0.04914381923117617 1979 19.320837542809784 1980 14.354198054443273 1981 10.029420415257945 1982 3.4541701195267933 1983 21.984177098884203 1984 -14.330061899575668 1985 13.870909228469714 1986 17.083968938283277 1987 -1.6682194328059978 1988 9.194473407232877 1989 2.0843708268927656 1990 3.3658227562105765 1991 0.015200481434263224 1992 21.128079319021992 1993 19.267264800258104 1994 22.601593326703863 1995 28.125878320114822 1996 -2.439987721499307 1997 13.200684113783296 1998 20.845591331944874 1999 6.992507062753788 2000 4.589716461418945 2001 2.9442485757539743 2002 11.996819376951478 2003 13.883916950424322 2004 22.19523473895903 2005 32.269644899071636 2006 21.504644218841307 2007 9.951587204334999 2008 22.44862579177112 2009 -1.9258161813126122 2010 15.811891465176942 2011 20.41173187692668 2012 6.021796637076619 2013 -8.145800951994744 2014 0.8712307640613517 2015 -5.850043681433121 2016 4.3818939037041105 2017 17.41998337551381 2018 8.82269675205076 2019 -0.838956281129839 2020 -12.622649898460025 2021 22.0944224617309 2022 10.589794851841546 2023 10.913635900904907