Year	% of GDP
1980	35.80583472352199
1981	36.38611565176587
1982	39.282900133886244
1983	37.37334629289603
1984	32.925535079154315
1985	33.931959139112436
1986	32.034835424388554
1987	29.453869522304267
1988	29.95754206761898
1989	32.87707159944787
1990	30.360946807547002
1991	7.603111095672824
1992	5.656684102282406
1993	13.676137450438624
1994	18.896584898773945
1995	21.27851345958212
1996	18.06379071596697
1997	16.65950851734254
1998	19.7426022741446
1999	19.734692083301397
2000	30.796258571944477
2001	34.98866978200334
2002	35.26406156325861
2003	33.896862799488886
2004	34.19674617979112
2005	36.86967567520515
2006	35.69751871988633
2007	34.46197003090537
2008	35.77842387542612
2009	34.55784589347656
2010	30.30866982079547
2011	31.413581480889174
2012	28.328549959446615
2013	28.052496457546482
2014	25.67469262992679
2015	25.819048502168645
2016	25.223825942509198
2017	25.052538025771064
2018	23.91020538882425
2019	23.01259551474668
2020	22.965030013576808
2021	24.812295138315285