Year	% of GDP
1975	14.436898162386003
1976	8.768116827445049
1977	11.482818469411479
1978	5.408398127626259
1979	8.25537920119132
1980	6.324054886586401
1981	5.70335692451739
1982	5.554915501266613
1983	4.256864343233463
1984	6.745700969467144
1985	8.034206291830882
1986	6.928619672150381
1987	7.570857908847185
1988	9.964098036902728
1989	11.40509866540974
1990	10.533404206912673
1991	11.862601723810508
1992	6.932544440975784
1993	12.836353012577154
1994	19.07726847262248
1995	17.625605325283487
1996	18.09530985915493
1997	10.410867657687023
1998	18.031633175300644
1999	9.363192271061916
2000	15.265862335030981
2001	21.09272209993512
2002	18.75432273136589
2003	21.156288220358324
2004	22.87169147747137
2005	19.207310517402696
2006	17.411536288962417
2007	6.743782057315449
2008	4.340973869627741
2009	11.03620335548306
2010	4.870860829152317
2011	3.8817620783489
2012	5.2675191854576315
2013	15.194813255798964
2014	18.232905467114968
2015	21.10305209080175
2016	18.63519706561577
2017	15.859632293630598
2018	19.99788317212749
2019	17.59063931309526
2020	21.075519516848225
2021	15.594465710609532
2022	17.82982109939092