Year	% of GDP
1973	24.481182652384152
1974	25.684971982287674
1975	28.22818071384091
1976	28.360395486393752
1977	28.937361482310227
1978	30.126591408958888
1979	30.728685150704095
1980	32.001662528935796
1981	32.568754825606426
1982	33.64488796883474
1983	33.82187680726051
1984	33.91098147911281
1985	34.35071719553162
1986	35.84427858937761
1987	36.0490873189971
1988	34.756632944920334
1989	34.30073949382173
1990	34.50972321582975
1991	36.77454271931202
1992	38.25552960832258
1993	39.41590045455789
1994	38.71653668285029
1995	43.63089168882752
1996	41.33625591733904
1997	40.167450450937
1998	38.93160268864219
1999	38.630466074069524
2000	37.70003118094455
2001	37.67913147548675
2002	37.90115802648154
2003	38.271263281254576
2004	37.45282526996055
2005	37.45316441531359
2006	36.85493149310336
2007	36.22131544240341
2008	36.95113395966514
2009	40.13323319220084
2010	40.491838102329396
2011	38.944025167716326
2012	39.19265552616171
2013	39.10394961830201
2014	38.65161526032523
2015	37.939330620559495
2016	37.4959264563027
2017	37.052697804860756
2018	36.722896857040425
2019	36.66206164373032
2020	42.46897190163716
2021	41.37185481095463
2022	39.84109524819233