Year	% of GDP
1972	23.007711478013672
1973	22.94949048797004
1974	24.169143713853963
1975	24.523709179167394
1976	26.645960436431444
1977	29.70679796669829
1978	31.87809774736783
1979	33.47638628021011
1980	33.68261039455174
1981	36.43455520953126
1982	37.10093161704237
1983	38.89310465110187
1984	37.683281118923354
1985	38.80508072906521
1986	37.31783337136691
1987	35.74166925295286
1988	34.53423465304542
1989	33.98712263899526
1990	35.17386978154769
1991	36.628073375912784
1992	39.70759515114345
1993	44.21656457522499
1994	41.94829967695078
1995	42.58535232038633
1996	40.121312551305074
1997	38.316215406964105
1998	37.47415701110825
1999	36.4229271528209
2000	34.53466996048005
2001	33.23915388673943
2002	33.627983447868175
2003	33.70474609134431
2004	32.71524849533283
2005	33.09941540419333
2006	31.97876904270409
2007	31.181545641660126
2008	31.546810860742152
2009	33.767123882164526
2010	33.05952768385549
2011	32.23856294621242
2012	32.84477033121868
2013	33.56713146383772
2014	33.01510495325254
2015	32.13450628686507
2016	31.947295500303397
2017	31.635984047026938
2018	31.705509137159076
2019	31.230712653766552
2020	34.75754276339684
2021	32.78224708460204
2022	31.660652316291028