Year	% of GDP
1962	8.17658612080147
1963	10.028196649637
1964	10.8523426693229
1965	9.53732870654502
1966	10.3055106103725
1967	11.6675798320228
1968	13.2148285582451
1969	13.3911038170324
1970	12.8526052562925
1971	13.7667451112475
1972	15.1122391822024
1973	14.6023755389318
1974	9.51447699657004
1975	14.4016633572455
1976	15.6399472151288
1977	22.3111429847322
1978	25.119563675259
1979	24.4853772806661
1980	25.0481680121595
1981	17.3365869368327
1982	20.192218048524
1983	23.3513547899921
1984	23.6584461647116
1985	22.6282442777213
1986	24.2771293600528
1991	22.1601664289166
1992	21.2526087401295
1993	21.4603683715839
1994	20.4826694012215
1995	18.5156309751918
1996	14.5694394470821
1997	14.1396186502005
1998	15.4226342665232
1999	15.3847495667787
2000	11.658523006751
2001	14.2023530376294
2002	14.0956756488903
2003	14.6041120161243
2004	11.0108526216107
2005	8.46879768324798
2006	6.10944661927221
2007	8.67278922884131
2008	9.93608236078215
2009	16.1064112021388
2010	15.8900249434493
2011	16.2119048144806
2012	15.4347839167533
2013	16.6233945477016
2014	18.151819699891
2015	21.8189203773135
2016	25.0397744682087
2017	23.9418938703413
2018	20.9850564751334