Year	% of GDP
1976	17.879427029195718
1977	21.200396769421754
1978	20.858796997042912
1979	19.876390347203643
1980	21.384544975049717
1981	21.769243600733788
1982	13.745201728889626
1983	15.857927641208915
1984	14.06970548746812
1985	16.885321483606962
1986	15.203465054067788
1987	11.758063848924154
1988	12.751254918313643
1989	13.417197693488339
1990	17.76415141360873
1991	18.2671643725713
1992	21.574447292262484
1993	14.781898757943262
1994	15.34660031874249
1995	14.512289528689386
1996	16.761081162761
1997	16.918236720570846
1998	14.940176518756893
1999	22.07335839005472
2000	26.62575837692372
2001	18.819054942993432
2002	17.812394310433238
2003	18.04265230588876
2004	18.970646967480235
2005	22.905603466757476
2006	26.51469569044097
2007	27.35170254293565
2008	30.487457906357594
2009	24.88350979968248
2010	24.816802064226803
2011	27.59569784641121
2012	27.05603587597638
2013	27.2669540464466
2014	26.55440511789518
2015	20.625722767961953
2016	21.320653708398936
2017	22.12803044659847
2018	21.225917402933955
2019	20.79208382222504
2020	19.858832423865675
2021	23.86776402935559
2022	24.167738630728845
2023	23.49697162749976