Year annual % growth 1987 3.461754891577556 1988 3.2373089524331675 1989 1.3188939485451385 1990 2.923261922569708 1991 0.3951116718166219 1992 1.9314252490715518 1993 2.973393332613256 1994 3.201281618131617 1995 2.4441683663154947 1996 6.432295418481175 1997 2.0220517276553522 1998 4.026389758827435 1999 1.1914788742956546 2000 0.3822101071283157 2001 0.9283911782221139 2002 1.8470719032638954 2003 4.385167645558184 2004 4.791768468604985 2005 5.019766200264712 2006 5.875115012522784 2007 4.622561895054901 2008 1.6027932433633225 2009 6.2086919001751255 2010 6.298839013445189 2011 2.645241212084585 2012 4.138432814673806 2013 4.401567009969483 2014 4.553575948603211 2015 5.799741746896842 2016 5.808073995234594 2017 4.508534996776476 2018 4.190506140820375 2019 2.621915225149877 2020 -5.365056209867561 2021 5.137411513869779