Year % of GDP 1993 1.399302694838318 1994 3.0202559809521348 1995 5.077049960835044 1996 15.895243227362855 1997 5.742252401904437 1998 4.06033387402894 1999 3.0457824119129167 2000 4.107529953065772 2001 1.8119589341552909 2002 27.212992149685437 2005 4.749280229276036 2006 5.362867256614526 2007 10.969199294545477 2008 12.79076173027594 2009 20.423418040047782 2010 36.102081750413966 2011 37.08923377880092 2013 34.10593707559155 2014 39.596999184642975 2015 33.556750327612825 2016 26.550873183265217 2017 29.339199967552865 2018 24.08197892445518 2019 18.340177787317597 2020 24.004971867722418 2021 26.122547808153712 2022 9.322294254863897