Year annual % growth 1961 -3.5405078791094837 1962 15.672103506886089 1963 -6.595583770521259 1964 -13.811611486258641 1965 40.232028418507156 1966 4.24314360448092 1967 -12.04720410950803 1968 -18.498954952092234 1969 13.460943777409298 1970 5.2061865412660495 1971 14.71436254879903 1972 61.71934406287701 1973 10.54341944604289 1974 6.435536337345553 1975 42.10052954055473 1976 7.336942118334406 1977 4.921772501485549 1978 -8.379626642892916 1979 -14.877850823943248 1980 -0.19283285588751653 1981 70.64184617874446 1982 -10.366446743088247 1983 -7.1772787163373835 1984 -7.84933954524395 1985 18.45361702585069 1986 3.951269191649871 1987 10.489198363228013 1988 3.558088764506678 1989 7.820821511031866 1990 7.165900369467153 1991 18.20000291053165 1992 17.2999956715789 1993 -9.290602425644764 1994 -60.85592375404742 1995 24.07592234586869 1996 25.61110652375227 1997 63.268476727306734 1998 -33.72832495248049 1999 42.17700479853187 2000 4.412788618957109 2001 9.270086147857114 2002 14.012627495480757 2003 11.81418118376169 2004 9.570718832479415 2005 9.47367675293485 2006 9.437120736555755 2007 1.2183871794366326 2008 2.252814557606669 2009 11.628788383781625 2010 10.388710786412943 2011 3.8790924982264414 2012 15.778784564911732 2013 -0.1713026325089544 2014 20.706287926963967 2015 5.072770571403893 2016 9.224360789615503 2017 7.303082088352511 2018 5.0223822237772 2019 17.594798405218086 2020 1.8571915421176044 2021 13.727321981903714 2022 10.58511671885715 2023 1.0230876226104044