Year	% of GDP
1972	12.90267933650985
1973	12.48364098637651
1974	12.636409583505781
1975	12.7029404649114
1976	14.099752367398066
1977	13.964909051354466
1978	14.286322498064152
1979	13.89605476996042
1980	13.77116860741048
1981	12.322829431391282
1982	14.934871124607502
1983	15.597849753131845
1984	13.970162145707302
1985	13.812118550396349
1986	15.592583690550823
1987	16.355457198283137
1988	15.097636749220428
1989	13.00029739143754
1990	15.121290569729078
1995	18.580841289388747
1996	18.63608852241042
1997	19.521901705559877
1998	20.528082159333906
1999	21.433046287726125
2000	22.470521838594607
2001	20.937772789460766
2002	21.26687723055057
2003	19.707676765012973
2004	19.13473005695188
2005	20.326505747433806
2006	19.97920073723145
2007	20.24284251417909
2008	20.21361261494723
2009	19.775680199895103
2010	20.386033572571403
2011	22.477694433384883
2012	24.625673309649514
2013	24.487395737195193
2014	25.231897614285714
2015	25.251055794355263
2016	27.02783616113354
2017	26.814639126516575
2018	27.268118573777933
2019	26.191805984418064
2020	25.373942962205042
2021	26.010965828703835
2022	27.807032446177605