Year	% of GDP
1975	13.389104156846635
1976	12.120395779943593
1977	13.230914125497941
1978	13.579467401548936
1979	14.199745789825396
1980	14.787583573894286
1981	13.793378651188196
1982	14.241389544265592
1983	15.405999494162836
1984	16.13204632184414
1985	16.556469173243226
1986	16.701230847831976
1987	16.33131155006138
1988	17.38664219339427
1989	18.357037430308598
1990	30.80590283849272
1991	29.01243176532019
1992	30.868149094563684
1993	33.244343059961764
1994	35.54473204985359
1995	31.498138396407665
1996	30.48481956182038
1997	29.2465142560274
1998	31.294952611638237
1999	32.20188316784989
2000	35.5331681664013
2001	36.38576110096783
2002	36.61750071906755
2003	37.614991707991976
2004	37.29678065791001
2005	39.58566372755985
2006	41.539257935892245
2007	48.56342168893873
2008	46.0460832170594
2009	23.249185443190175
2010	23.054163307191818
2011	23.149776602213457
2012	23.33476888771345
2013	23.521167498672142
2014	24.715722007671655
2015	24.047387469333326
2016	23.516058007503595
2017	23.819883399543983
2018	23.979359721376074
2019	23.29939303706982
2020	22.228896968410574
2021	23.233255628393074
2022	24.710890304928537