Year annual % growth 1981 47.845399114548826 1982 -6.044634536646072 1983 -10.257309627967757 1984 -6.677858483087746 1985 -18.302079302052206 1986 -10.140598395321376 1987 138.90760844720512 1988 -18.607948043932566 1989 4.147511468750324 1990 21.597633129438435 1991 -12.867016410156367 1992 30.11437980526793 1993 -15.005311577456752 1994 -18.64534449133936 1995 26.86320995369951 1996 -10.972243277293643 1997 2.2167494598818394 1998 -7.287435104336581 1999 15.482259666406932 2000 4.281705278147172 2001 4.6287907736495555 2002 16.884809731721134 2003 -13.725887916799934 2004 -4.355603463298678 2005 28.618770989880403 2006 -23.212035966987386 2007 -0.968850648091248 2008 -3.9153394983658387 2009 3.730511275480481 2010 -9.03771388466842 2011 11.997435102592618 2012 9.923688389493648 2013 11.283037733738738 2014 7.941947462233472 2015 15.59413836102172 2016 6.469403037025501 2017 -4.165767853963615 2018 -13.798796922936774 2019 15.55996233368306 2020 -19.02148277532376 2021 13.899863242815627 2022 39.67426110464726 2023 2.6453965835069795