Year	% of GDP
1991	1.2646540610138697
1992	1.363524552789619
1993	2.350538137128994
1994	3.512080082350946
1995	2.7893056114327885
1996	3.989068415727886
1997	4.127261483553738
1998	3.9541817861047086
1999	4.867456754319303
2000	4.69809149754936
2005	20.460251963554096
2006	20.254258981138225
2007	20.37980931597953
2008	18.932594650884468
2009	16.712434787085048
2010	16.378128667565896
2011	18.232207287242343
2012	19.277548202853872
2013	18.51609248635972
2014	19.70488545943804
2015	19.61376507475402
2016	19.61263410831261
2017	19.55695843036701
2018	20.979168750221795
2019	20.592359029642875
2020	11.293548169043808
2021	13.10280138860685
2022	21.096822594212014