Year	% of GDP
1980	27.103029780251024
1981	25.664214421290836
1982	28.99250553760679
1983	36.076527559178395
1984	38.74788447606278
1985	29.693326893979417
1986	28.36013558275606
1987	19.811020469525413
1988	17.000467472483685
1989	17.423381757006503
1990	16.644767296882854
1991	17.404825499270213
1992	19.013022295648657
1993	20.42919847915367
1994	17.539687270946914
1995	15.238855362429643
1996	10.89027019714839
1997	10.532336871361043
1998	12.338430671144813
1999	11.940490854502505
2000	16.388420172259472
2001	16.973674464082013
2002	23.111810953769723
2003	23.572270798462103
2004	22.51388422598221
2005	25.68651486283027
2006	29.499453130951064
2007	33.55127238546572
2008	34.52266920443143
2009	25.259919974677587
2010	26.04551627553865
2011	21.06663585951941
2012	26.837309955075966
2013	24.76370757606965
2014	25.600257452337065
2015	24.013869568635222
2016	25.75199673430342
2017	28.389576321260368
2018	29.46166736341945
2019	27.792610025854763
2020	28.895430001123767
2021	24.612390286301476