Year	% of GDP
1970	13.3588476793543
1971	10.7426119078661
1972	13.9629126915589
1973	14.4474558895715
1974	6.34477289570914
1975	8.58651394985291
1976	10.5033418645106
1977	15.2253177993668
1978	15.2107041679855
1979	12.8501057969884
1980	10.3808113716186
1981	11.7553842365103
1982	17.7397296876146
1983	22.7673948308112
1984	19.3607598963855
1985	24.8482017306626
1986	40.6166478585149
1987	41.9135426600042
1988	37.2677087304169
1989	43.4564278455285
1990	33.6251872503954
1991	43.0203544061303
1992	46.6220169836516
1993	64.7696714666908
1994	66.8635751037194
1995	61.1710898814542
1996	59.2919110653782
1997	53.6796035430377
1998	69.3742263109823
1999	66.8772583183703
2000	40.0864709340098
2001	59.059063283208
2002	56.1297273140003
2003	48.5585106755542
2004	42.6537519911351
2005	42.6640911586701
2006	41.728326211244
2007	50.7249600209545
2008	51.5554255057998
2009	76.0625288634946
2010	71.6207329684045
2011	72.4066439933061
2012	79.8070292350538
2013	75.2378755517585
2014	81.9102450117097
2015	124.040002683729
2016	147.74870388644
2017	147.76668460551
2018	132.796663251845