Year	% of GDP
1990	27.404564954125583
1991	38.568799978536944
1992	38.21004404728062
1993	37.48729380659776
1994	33.22087399167813
1995	33.9632282290381
1996	32.40442257561202
1997	32.245127960942746
1998	33.57184426830327
1999	31.446988674421227
2000	30.04353761536877
2001	30.90203173452761
2002	31.82005287711036
2003	32.6952561964074
2004	35.264616243771435
2005	35.25164545639006
2006	35.15972369084429
2007	39.54023500213191
2008	40.34868493414155
2009	41.874275548930655
2010	36.83316310790383
2011	35.4004101685253
2012	36.11948833947386
2013	37.295807474215124
2014	38.61877747921808
2015	40.9410606479139
2016	38.63763297934399
2017	39.63055471819635
2018	37.07889147644154
2019	37.805635881362775
2020	35.548968498466756
2021	35.304634809983455