Year	% of GDP
1972	24.5396770011341
1973	23.234588631739758
1974	29.28235241138032
1975	29.075788857961193
1976	32.304005296963666
1977	33.6025638397117
1978	31.752444645036682
1979	36.12082642269103
1980	34.323717916762234
1981	32.884931508201156
1982	37.293254726693085
1983	37.27566336725989
1984	35.80555584845151
1985	33.635832431580624
1986	32.70979649240329
1987	30.10923392836556
1988	28.431352283170675
1989	26.66370732580533
1990	25.687469327589408
1991	19.25026110678823
1992	25.506131662929278
1993	25.848086977823435
1994	26.30400728474514
1995	25.87473078141858
1996	25.299043947870555
1997	25.694063500093506
1998	24.81328194387678
1999	24.762243824463475
2000	26.385814134924917
2001	25.903546187532772
2002	24.90403493265343
2003	24.13860234942098
2004	24.042567244474252
2005	24.56561951497896
2006	25.314346886232247
2007	25.300632769303466
2008	23.282033054785728
2009	21.390010727570967
2010	22.084836326269023
2011	22.302987874282124
2012	21.71224851029058
2013	22.55825392693787
2014	22.854807724373927
2015	23.067100904370182
2016	23.042263836726825
2017	24.24172333563813
2018	22.69560492144567
2019	22.115000518814863
2020	21.905311856772673
2021	24.615395963075414
2022	25.01121053971524