Year	% of GDP
1996	15.970825899884563
1997	18.396042166284225
1998	17.866790810870608
1999	20.36335633230775
2000	17.958245903106548
2001	20.15929083921832
2002	20.086378128942922
2003	23.113868142198438
2004	23.715290614087277
2005	24.4490068264641
2006	24.429058766195574
2007	28.971169350449788
2008	33.166035960981745
2009	32.880301762681086
2010	36.53320873673987
2011	39.85330127399996
2012	38.92874581856381
2013	38.25991708339506
2014	37.26019392681225
2015	31.75302151181792
2016	30.23443159491763
2017	31.92116850949723
2018	31.382010400040848
2019	32.89393769223242
2020	27.762431025499946
2021	24.524239116179828
2022	20.987590936400537