Year	% of GDP
1960	23.15601251676352
1961	23.592727272727274
1962	24.806312769010045
1963	29.566513140070445
1964	28.61542409854998
1965	28.591044037605144
1966	27.16324817080484
1967	27.854376452362512
1968	25.580332151520807
1969	24.67892261650278
1970	22.891539812646368
1971	24.631316725978646
1972	26.247786449793402
1973	22.36415996522495
1974	19.3858062344874
1975	17.946344583662565
1976	20.922756017614144
1977	24.236273244156344
1978	27.17215516231103
1979	31.593525111191706
1980	32.021134276308864
1981	30.04070348803012
1982	32.25931598782724
1983	31.834935567964077
1984	29.211751850454647
1985	31.196612779060818
1986	29.419748821556325
1987	30.984124886261394
1988	31.539539241920515
1989	30.11581319221409
1990	28.258750468662207
1991	29.762869009797367
1992	30.43671684501849
1993	31.949902535994713
1994	32.98340148052269
1995	38.851838651515784
1996	37.579140455757376
1997	37.47934339168254
1998	37.10670873666239
1999	38.72814913337969
2000	38.438896469248654
2001	39.01730001037375
2002	39.35043950729668
2003	39.38806804838274
2004	41.06658129432128
2005	41.67780342065581
2006	40.98922143998258
2007	39.23269737712927
2008	34.524380377673566
2009	37.35342052425903
2010	31.546110855866626
2011	41.872739492606904
2012	41.04535550501861
2013	43.15058378365176
2014	45.572592804399584
2015	49.68539004081971
2016	52.113865612767505
2017	54.48891337314503
2018	56.891956024486966
2019	59.46206620810531