Year	% of GDP
1960	8.00482409116765
1961	9.163065735651239
1962	9.74172015885031
1963	10.309986639404439
1964	10.321985288436126
1965	11.10278108061257
1966	11.923485306571736
1967	12.066170023106087
1968	12.635762397284255
1969	12.843480978392595
1970	12.659178524412749
1971	13.805081218436648
1972	14.224209911151377
1973	13.861663864348985
1974	12.969413429903991
1975	14.353857260275388
1976	16.65380663384796
1977	17.957004938700496
1978	19.54559479248749
1979	20.089535782764198
1980	20.05413589686569
1981	17.342762002243507
1982	18.92397535143246
1983	20.66953300071767
1984	21.072586049156637
1985	21.495262826048606
1986	23.04588928747617
1987	22.482940279513713
1988	22.267157129444016
1989	22.954536377370072
1990	21.825593569336846
1991	20.073389702666983
1992	21.825902030236144
1993	21.691260771391253
1994	22.254979018690673
1995	22.361284976059263
1996	23.062545121831334
1997	24.289312651656335
1998	24.093893185402035
1999	28.360108569975772
2000	28.88286069280644
2001	29.421516482478186
2002	30.522462663202166
2003	29.733613215773666
2004	31.880077815356998
2005	33.37466942122313
2006	34.830333845677465
2007	37.46026981636799
2008	38.997184332269946
2009	39.4381178209523
2010	41.390260667514134
2011	41.11408393084362
2012	40.512633248816485
2013	40.074313652104124
2014	40.82343334137591
2015	41.96605682529135
2016	43.037090909238415
2017	43.91459148609351
2018	43.76806248859188
2019	44.57850559255328
2020	47.927223019140214
2021	46.66225469163707