Year annual % growth 1977 5.521801451888891 1978 13.49096454174179 1979 20.048648648648566 1980 12.34441635630364 1981 18.877323164656843 1982 4.616518321581253 1983 -3.121417620816757 1984 4.714179129302451 1985 0.9267117164135215 1986 8.359600883129431 1987 1.3440837904905862 1988 3.7191723889427664 1989 -13.632631146764368 1990 -2.053736309948235 1991 2.301206326928522 1992 3.4286755300923346 1993 5.8727275154865595 1994 3.9880681187353133 1995 9.355244058674671 1996 4.438647700866454 1997 3.69613003273696 1998 3.8258705228822123 1999 3.64123327498109 2000 5.398217016323443 2001 5.025695724874367 2002 4.247898928223506 2003 4.610649195459743 2004 6.810759659857339 2005 10.083527118182346 2006 6.4714316674024985 2007 7.283933355743713 2008 5.366630321254817 2009 3.7109672404528737 2010 3.3823936809293826 2011 3.12436468124406 2012 4.450327058385554 2013 3.4368845178765355 2014 2.9556193100294053 2015 2.6932814980668525 2016 2.595894920335496 2017 2.184830116194078 2018 2.5405938688413556 2019 2.8978678709407717 2020 -2.0626356535344854 2021 4.255854512072403 2022 2.120306778483254 2023 2.3388343245156022