Year	% of GDP
1970	0.9362745742643961
1971	1.1466158103395943
1972	1.1305883233644338
1973	1.7457090727222986
1974	7.2321367669706875
1975	5.6507243892194525
1976	5.716261191737849
1977	4.663265151639392
1978	4.563244999591283
1979	10.602130108219546
1980	10.159071337046408
1981	7.683125948709223
1982	5.681889613892146
1983	7.038010311787869
1984	6.822073416217192
1985	6.363296010058579
1986	2.963704565590897
1987	4.668198677049979
1988	3.1751655215782737
1989	3.1592512121149743
1990	4.136874165992542
1991	2.2123947787940654
1992	2.210559963766759
1993	1.8753659882298785
1994	1.591781553969113
1995	1.7769336658773358
1996	2.2559655093520425
1997	1.9023393371192012
1998	1.0302271155599745
1999	1.9217365456837305
2000	3.18411018602494
2001	2.458935331608265
2002	2.881557688801502
2003	3.1221882548577966
2004	3.6909197304444006
2005	4.714239801723862
2006	4.88134285540427
2007	4.205929502267219
2008	4.966805800531126
2009	2.5509423082559404
2010	2.9479892205441605
2011	4.158326242729377
2012	3.913320646318229
2013	3.4837315039867263
2014	3.1181784662393297
2015	1.0770335387845766
2016	0.8295427533564609
2017	1.0848164585583504
2018	1.7185197781349306
2019	1.4223482826292084
2020	0.7975818518135416
2021	1.9306725625519792