Year	% of GDP
1981	12.10529497098646
1982	12.499158246890902
1983	11.743082427681284
1984	11.8464085104044
1985	11.440355362812243
1986	11.249025980487461
1987	10.166627059937152
1988	9.94410713101361
1989	9.510625148150273
1990	9.467812160316653
1991	10.265094964520044
1992	10.331189024558348
1993	11.46909726170165
1994	11.757371078054472
1995	12.380713124553958
1996	15.726249306335799
1997	15.65344616005965
1998	16.50465628372462
1999	16.732702145845444
2000	17.256839205760524
2001	17.86487813082444
2002	18.611819254398302
2003	19.329283802662033
2004	19.611316639446482
2005	20.3255125983992
2006	20.58128222042259
2007	21.084267506875687
2008	21.703756551402282
2009	21.8891628526343
2010	21.572775055304525
2011	22.163396118357493
2012	22.500226048935758
2013	21.748566310281355
2014	22.029324961463878
2015	22.065687589997722
2016	23.704138087814986
2017	23.6604825730437
2018	24.944013410486114
2019	25.249725683681646
2020	24.01558898502537
2021	23.700798893021123
2022	24.515118954616195
2023	24.184332749916347