Year	% of GDP
1972	29.07857252409801
1973	26.811554202711118
1974	30.169857764117918
1975	31.02452972469201
1976	29.97573640174708
1977	30.451506921306077
1978	31.368303306745126
1979	32.870084325067324
1980	35.97945704966222
1981	38.04910390529597
1982	39.15182149010234
1983	39.65946177308685
1984	39.16264122081816
1985	37.47827867550586
1986	35.135995181714875
1987	34.98962900191944
1988	36.512720384377026
1989	36.83722936019667
1990	37.0039568823522
1991	36.590391984433204
1992	37.575695667913365
1993	40.28838419895138
1994	40.70759135080825
1995	42.32420494973831
1996	40.990284065387264
1997	39.32941637592942
1998	38.97561967509275
1999	38.17584209891581
2000	36.79341075333687
2001	36.62547557658136
2002	36.6384893476224
2003	37.08143658884192
2004	36.812131888392265
2005	34.89984392467171
2006	33.2287477094202
2007	36.06675081691684
2008	36.760980329934036
2009	41.94240592186069
2010	42.26860560021428
2011	42.38630471250025
2012	43.52369493276603
2013	41.41376955414395
2014	40.91077743055071
2015	40.444200847902636
2016	38.38361541106773
2017	37.02215267307917
2018	36.8022464830679
2019	35.9531907511295
2020	39.66488351352739
2021	37.1593605296968
2022	32.68253520085331