Year	% of GDP
1970	6.75179243610598
1971	5.38352192015516
1972	6.30829520929673
1973	8.73543999776321
1974	8.53403130645269
1975	9.72861507991445
1976	8.01546941205375
1977	12.5079383280415
1978	11.6536279070685
1979	8.38373040902871
1980	8.97893496518094
1981	7.57807236432871
1982	10.8146641849216
1983	6.54287623578637
1984	6.77837470134746
1985	5.93607795107987
1986	8.5754324322928
1987	9.32629775954397
1988	10.3888577552606
1989	10.6546944331069
1990	13.3710325485084
1991	12.6945459260951
1992	14.0206683948811
1993	14.2386485803442
1994	17.0617153405694
1995	24.0289135102954
1996	28.9246630230297
1997	23.6215639518173
1998	27.019238377295
1999	15.4172437381217
2000	15.0609351884312
2001	18.812078088637
2002	24.3014254644156
2003	40.4921952045604
2004	30.4545201860965
2005	26.6807675145409
2006	23.9491794618101
2007	32.3563567682481
2008	33.0482440437363
2009	30.3366575642074
2010	23.8533757417192
2011	24.9891589486881
2012	17.5501999315408
2013	17.7328553188701
2014	17.4547483367972
2015	15.5344531520944
2016	19.1016499815056
2017	18.5076749744059
2018	13.4317629933204
2019	13.1274376353104
2020	13.8475521568267
2021	13.9570339894077