Year	% of GDP
1960	6.971092843151333
1961	6.9099535989290795
1962	6.790245064098395
1963	7.201748191877885
1964	6.867038191398104
1965	6.665208392149596
1966	6.160161573194439
1967	6.054707592401709
1968	6.589586853333261
1969	6.546952301172132
1970	7.013510574046003
1971	7.078544835302179
1972	6.857619287497911
1973	7.389755181708811
1974	9.620692848568273
1975	9.006700330955464
1976	10.065145274382038
1977	10.317274300568938
1978	11.703809393428724
1979	15.55702226689666
1980	12.894251983322391
1981	13.916567585488815
1982	12.63735758006382
1983	13.363265926707932
1984	16.871903701176535
1985	15.491253644182326
1986	19.663314961237493
1987	21.558845356313327
1988	14.828495554567468
1989	15.473660905061529
1990	14.802019833850572
1991	13.677180336038727
1992	13.3470612638839
1993	11.50510044260044
1994	9.56520099073719
1995	12.913717829538896
1996	14.500850568070128
1997	12.68262228380183
1998	10.251182825740464
1999	10.790592462622577
2000	12.34909948005946
2001	12.068304771994743
2002	13.25492447043867
2003	11.611947906870537
2004	8.162231921589477
2005	7.2180833297441485
2006	9.77272539876896
2007	9.67956604903807
2008	10.92407685678946
2009	11.051505691875265
2010	11.466782543922841
2011	12.052089360053369
2012	12.420870388070293
2013	13.31894076445048
2014	15.656737788950622
2015	15.864195242508494
2016	15.842897727272728
2017	15.613720921682031
2018	14.617886715418638
2019	16.889807714797968
2020	21.338821771467558
2021	22.893881706782587