Year	% of GDP
1972	28.390724506954513
1973	26.545523955966615
1974	26.11991041058043
1975	30.27381055774801
1976	28.00044837764835
1977	28.43788869010913
1978	29.134327770252654
1979	29.642162302562003
1980	30.37975752153208
1981	28.839754489983786
1982	27.88866077945228
1983	26.75069753764093
1984	28.156827607894876
1985	26.193195534094194
1986	25.086907873396974
1987	23.430804337538603
1988	20.647741438172066
1989	19.99565391713923
1990	18.848950136782662
1991	20.258060446534685
1992	20.835611101672836
1993	20.861212317993004
1994	20.05539819035764
1995	19.669756323303222
1996	20.427172383073476
1997	20.403324484205477
1998	20.422203042527862
1999	20.099456950833662
2000	20.78553542956619
2001	20.837870423569402
2002	20.174910550330498
2003	20.006185982259307
2004	21.243145302694362
2005	22.994703850987396
2006	24.591329432510875
2007	26.102329433856646
2008	24.501437438339796
2009	19.115447191666984
2010	21.5500846133609
2011	22.660913264516484
2012	22.104886568402645
2013	20.992790607129
2014	20.65648769684212
2015	21.142357659991973
2016	20.857099275445393
2017	21.16804321610242
2018	22.174030616679293
2019	21.739927149930953
2020	19.938266751093302
2021	24.152896948759313
2022	26.0044134851018