Year	% of GDP
1971	0.5045734175021502
1972	0.4884601919870275
1973	0.48801539314490977
1974	0.6832306971806245
1975	1.2925584291045271
1976	1.364348654826372
1977	1.4628128452518423
1978	1.2726288594953132
1979	1.1948668080650375
1980	1.248377910458698
1981	1.352282200146588
1982	1.6770470772234962
1983	1.3025999049625392
1984	1.33644316709147
1985	1.6806531590645857
1986	1.298827417387918
1987	0.8810661918458226
1988	1.017819861886627
1989	1.169275116865726
1990	1.0465446218991852
1991	0.9517142405732446
1992	0.9035909060000713
1993	0.6877133253481715
1994	0.7009616956645306
1995	0.8119746164211084
1996	0.6505355368197945
1997	0.5386677476357832
1998	0.4065238521782429
1999	0.3858466793160176
2000	0.507091723770568
2001	0.9023220210338391
2002	0.5499152954045785
2003	0.5256027651430002
2004	1.2796422319763128
2005	0.8949356493733757
2006	0.8269657839962691
2007	0.9945680603367463
2008	1.9531777104397128
2009	0.6977719829895134
2010	1.0751260117604602
2011	1.22962822876738
2012	0.8167790890450314
2013	0.6113052501878337
2014	0.4426915388587371
2015	0.34589368257361813
2016	0.42244410807869553
2017	0.5567737805704942
2018	0.6096180477036343
2019	0.4316168298334637
2020	0.3568690955484144
2021	0.6005162413877184