Year	% of GDP
1978	28.138144329896907
1979	30.19847328244275
1980	25.7091916229208
1981	19.06875924552416
1982	21.181038885446082
1983	22.866104969050475
1984	27.772848887425596
1985	26.89512771260022
1986	28.016536631662664
1987	31.207547918015482
1988	34.84481091257632
1989	32.17994555759526
1990	25.784765774170985
1991	28.097077052461856
1992	27.42382770797509
1993	26.05697658420666
1994	23.574894515404402
1995	21.350303081551132
1996	21.61736779037571
1997	21.4561254161428
1998	19.5413851296541
1999	19.508397646061194
2000	21.680260479696617
2001	19.258907272205718
2002	18.93958264795482
2003	17.48718883572568
2004	18.42538496674184
2005	22.653858995916405
2006	25.383779466893763
2007	27.272447919329373
2008	26.05420846084788
2009	28.21399439187523
2010	28.64309257075797
2011	32.10409393554339
2012	35.143984958875826
2013	36.668695447448854
2014	36.89825033755317
2015	40.38142094593159
2016	43.24870090611433
2017	42.3351129297495
2018	40.80992215675133
2019	38.40296187577452
2020	42.945093373147344
2021	45.17097096187501
2022	45.515440072723