Year	% of GDP
1963	33.67746529013884
1964	37.92196405085489
1965	37.27041158332216
1966	37.48063401263258
1967	35.779308161165204
1968	38.2870497662909
1969	41.800326688052266
1970	45.311516677155446
1971	44.87799246742377
1972	50.25113522758754
1973	59.073069375505014
1974	53.30673192325077
1975	55.99947555121753
1976	57.32700587866751
1977	58.15987085096494
1978	60.177560613827474
1979	64.57533158004276
1980	68.89553761944521
1981	75.3393516078018
1982	80.10900144785941
1983	85.60092490409376
1984	85.31430324176141
1985	87.58577483677085
1986	84.32800964475322
1987	80.55631785200715
1988	76.33772081680931
1989	79.5273086113671
1990	79.15474456075344
1991	79.86091659579235
1992	81.07729374165393
1993	80.96353158754165
1994	81.18224447694202
1995	88.28706936100843
1996	93.73591442451308
1997	96.46492368045074
1998	107.92410379794654
1999	102.69841541170237
2000	96.04582195270973
2001	115.01837330376368
2002	102.02168884253953
2003	104.78203645824455
2004	95.72860574079502
2005	89.22307413866861
2006	84.28692896474746
2007	85.35168626346548
2008	97.8642893229798
2009	96.86130572656337
2010	94.85837211500026
2011	104.70364538137946
2012	112.97351604859934
2013	124.06595156861935
2014	128.129763309946
2015	122.42135384576144
2016	123.71239034120055
2017	120.98227810074167
2018	117.77753036329734
2019	119.23309269179198
2020	129.07160831167238