Year	% of GDP
1976	13.325492317647578
1977	13.047163329734843
1978	15.308400370482591
1979	17.14316551515681
1980	18.41928366343632
1981	17.552499233653794
1982	16.32342503658397
1983	15.943079057097012
1984	16.422548673309148
1985	15.503147032923877
1986	15.766687999308695
1987	18.767299588135568
1988	20.298593755693993
1989	22.168327200902514
1990	21.999468534090607
1991	21.162854601727
1992	36.09096542044319
1993	29.08570416227742
1994	26.45909146120044
1995	25.537198582068832
1996	24.385681412148372
1997	25.063920270275876
1998	25.537198870297466
1999	29.2007859698293
2000	31.749158997186562
2001	31.60999943469141
2002	32.94812628043681
2003	35.644822911180086
2004	38.16806029990812
2005	38.95429844176025
2006	39.4883200807597
2007	38.122199030373885
2008	37.16228506544993
2009	31.03244183818831
2010	32.23636054055571
2011	32.47883260150059
2012	31.92681227246984
2013	31.08356327017006
2014	30.506358802936628
2015	29.411719792697234
2016	28.077231288782706
2017	28.377532182728437
2018	28.810144234085875
2019	28.120743432255512
2020	27.63109771866612
2021	29.67390977416168
2022	31.262992060326727
2023	29.594202436433005