Year % of GDP 1982 2.211715168106158 1983 1.9389930523526622 1984 2.1804485773361573 1985 1.8026545432667667 1986 2.029205530233018 1987 2.535782161574746 1988 2.7087887428370006 1989 2.4478959375048825 1990 2.828537117953355 1991 2.8953501655998926 1992 4.376273686706616 1993 5.223154052215368 1994 5.833373231299202 1995 6.038670631742856 1996 4.999830305402051 1997 8.925522377992326 1998 8.70531698027833 1999 8.975927987972135 2000 9.491730511860741 2001 9.673429387723656 2002 10.127382275380887 2003 6.819641012270582 2004 7.775605947909414 2005 7.10595689449121 2006 7.082149627125034 2007 7.476764040704718 2008 7.014336431298957 2009 5.929275106126434 2010 6.106927594327568 2011 5.9443594907246755 2012 5.659465352777185 2013 5.617417734519592 2014 6.224200290160237 2015 5.904389930063656 2016 5.785946935463382 2017 5.564835805135018 2018 5.464605962649587 2019 5.251183440376203 2020 4.155145228504497 2021 4.376980702577684 2022 4.655188557042606 2023 4.899992045638045