Year	% of GDP
1980	21.7664662380918
1981	30.8892566111225
1982	28.8246976547821
1983	29.9251116676304
1984	30.2708464351572
1985	32.681564135143
1986	32.2440421363687
1987	33.2617517020207
1988	32.9120702785232
1989	36.5128442349588
1990	41.5820164981331
1991	48.5537163756604
1992	53.2482601563828
1993	36.4299700289529
1994	53.0137947834205
1995	59.412498268911
1996	57.7266264610872
1997	61.5515192642999
1998	58.504152614856
1999	51.6177476135813
2000	64.6850612264539
2001	66.5450123641155
2002	71.8218210575688
2003	71.3079428914775
2004	72.2154253005684
2005	72.3374032256006
2006	74.943471929806
2007	64.4032377462002
2008	67.8412417927082
2009	73.0004826173334
2010	76.1279747539408
2011	82.1463793365803
2012	83.1509266711741
2013	84.0530254985142
2014	85.1994805797629
2015	84.5254845957134
2016	83.7137394047656
2017	85.8145343207342
2018	82.5620208532171