Year % of GDP 1993 0.044623313690168295 1994 0.3189347672796793 1995 0.3955218599759668 1996 1.8367093939243968 1997 1.1797246353454705 1998 2.0182232486772347 1999 1.8887833745556446 2000 1.7529206073368158 2001 0.4835965222405668 2004 0.38105597791773416 2005 0.29587194969404934 2006 0.3293928222706144 2007 0.8891161589979651 2008 1.5950871817613101 2009 2.2827873946209087 2010 4.196545046635778 2011 1.7296326693949382 2012 1.0825083738263857 2013 0.8239518607488963 2014 9.144392325440116 2015 6.975417171496752 2016 5.776555014171719 2017 9.022850648310078 2018 5.023024586035364 2019 3.7373823821098933 2020 3.9895668847846606 2021 9.929295040302902 2022 4.952788636231512