Year	% of GDP
1981	0.382868959987846
1985	2.0961282708969193
1988	5.75373983217888
2000	23.366049270722367
2001	21.37575695210291
2002	17.856300783021407
2003	26.629579863603084
2004	32.31993520006878
2005	37.228809939914434
2006	45.8664241530851
2007	63.99255083352254
2008	27.49564811859356
2009	58.564075663618155
2010	56.38443989463795
2011	39.90244640952257
2012	44.54714456749915
2013	37.76494110580967
2014	32.34065363030827
2015	26.408215025755595
2016	34.070856152850126
2017	38.1130301895126
2018	35.992471792704414
2019	44.37335047172169
2020	46.08932834627745
2021	36.62245842018187
2022	30.83366019141346