Year % of GDP 1990 0 1991 0 1992 0.282585340140406 1993 0.14777087076087 1994 0.171979900649593 1995 0.411043635650341 1996 0.418329671894138 1997 0.456621726398018 1998 0.225167352573719 1999 0.476069261980792 2000 0.633697728184772 2001 0.443927573948253 2002 0.684907219175688 2003 0.55049994375961 2004 0.408572669207736 2005 0.309365930294612 2006 0.516589789878647 2007 0.495364202675643 2008 0.437602477255297 2009 0.457413669879396 2010 1.44243773063226 2011 1.76956852075726 2012 1.47187397202428 2013 1.1522690734811 2014 1.30072335544431 2015 1.33117691744839 2016 2.7461458602989 2017 3.20501299100874 2018 3.71239504049256 2019 3.70846698650732 2020 3.73160590717429 2021 7.09388801536399