Year annual % growth 1966 0.7929282270522151 1967 6.500490856406785 1968 -14.788891893574373 1969 2.171729166245399 1970 17.620784076376623 1971 9.12681054913324 1972 22.57166617189246 1973 -1.1353309255284358 1974 19.884015816425958 1975 9.837633029728707 1976 11.380977217701329 1977 15.197909368868864 1978 8.4214037962264 1979 15.067554528181176 1980 4.49741139873494 1981 13.013217453345433 1982 0.9111201790989298 1983 -2.237812096184271 1984 5.677006039138462 1985 -13.047328631389433 1986 -2.0559732803095727 1987 -3.450066367101286 1988 16.147341004540976 1989 14.551144024074887 1990 10.690447689912645 1991 -5.629246485143014 1992 11.751949467120951 1993 2.7390386657543786 1994 3.1971934136484634 1995 3.738684126123971 1996 -3.3566457404460692 1997 8.820796957416022 1998 5.657416490748062 1999 2.8328833881714104 2000 6.962875473395442 2001 20.780885665626727 2002 -3.0107571918320986 2003 0.3028672004729742 2004 2.7224508268663783 2005 -0.04374978100506155 2006 7.5966374398317384 2007 9.599551180728128 2008 5.399942675334259 2009 -8.199985959259877 2010 45.8102675819633 2011 -1.06344853320077 2012 4.632830993903212 2013 -1.7061615894049282 2014 1.1459491555033168 2015 -2.235966293570627 2016 1.8888457006888757 2017 4.1466869755277145 2018 2.4880527206484686 2019 -8.386231607744534 2020 -16.555493322976787 2021 10.880646783708372 2022 11.408439898145971 2023 7.896634640488955