Year	% of GDP
1960	8.21621614515705
1961	10.726041048748806
1962	12.57042022533012
1963	20.26410137269155
1964	15.970502980546208
1965	13.945945945945946
1966	14.470201071225345
1967	14.191616766467066
1968	14.746223663587472
1969	15.642102503655387
1970	17.763124522206812
1971	18.545195052331113
1972	22.835944700460832
1973	20.564245810055866
1974	13.119989238633305
1975	14.410250865051902
1976	13.870810735641776
1977	18.069255288322225
1978	24.10645400593472
1979	19.13651877133106
1980	15.769298827582393
1981	16.292520247641733
1982	15.558583564555473
1983	17.72854600325002
1984	16.182431564066317
1985	20.20633122292569
1986	28.53423262916773
1987	29.74003851275472
1988	16.74835826830149
1989	15.478771995507302
1990	12.922312723682586
1991	14.634027926762942
1992	10.944361125748179
1993	10.315251757205194
1994	6.755996565837844
1995	7.921784098254686
1996	6.589329854435595
1997	8.680582805313435
1998	10.779508506616258
1999	9.963671194705677
2000	8.696552297544482
2001	12.521323566985629
2002	12.310953555709077
2003	11.518347899866429
2004	9.270946511216996
2005	8.46361766400408
2006	9.553023111160206
2007	9.952229099035675
2008	8.651697624503552
2009	10.080230044165404
2010	8.19334768765331
2011	9.510192318207904
2012	11.277604683973987
2013	14.984307508150064
2014	14.512954524347805
2015	14.485042248840765
2016	13.794804441931948
2017	10.254129269538549
2018	13.054375967554341
2019	13.349523106332622