Year	% of GDP
1974	12.093389667032378
1975	11.162422680436409
1976	11.641525978599407
1977	12.684632085042871
1978	13.75515982815152
1979	14.358842185938844
1980	15.00167372508304
1981	21.345341524913163
1982	18.294029898929512
1983	19.553576329408138
1984	18.31677581205138
1985	16.837339320147784
1986	15.192947275890187
1987	13.370403898676035
1988	14.293450178632161
1989	14.328699083658556
1990	16.105450183570348
1991	14.765395799139606
1992	14.615334332536776
1993	13.506919846153876
1994	17.9767152637555
1995	17.240888093017425
1996	11.739828687488536
1997	12.579425933543225
1998	13.36523391191093
1999	12.82665497504239
2000	13.166707854444514
2001	12.489415585370233
2002	13.491387918884664
2003	13.241129207765749
2004	13.556908026618306
2005	14.28641583501373
2006	14.062655901800117
2007	17.45165290141534
2008	16.112003761774417
2009	13.473596903344015
2010	13.455882040757208
2011	13.814292959030542
2012	14.43761534274675
2013	14.652600075936933
2014	14.021888714163996
2015	14.082618605087482
2016	13.436618725769812
2017	13.427214506885903
2018	13.491308073058974
2019	13.967810641873852
2020	14.33219496069528
2021	18.451541330828352