Year	% of GDP
1981	14.988897786794736
1982	15.28795661017068
1983	14.695514874186937
1984	15.874303534140289
1985	17.034517101710392
1986	18.949392852638482
1987	19.357161993146345
1988	20.27200730004318
1989	19.73869509365085
1990	19.425121669870173
1991	20.19699929310966
1992	16.34671921841991
1993	16.55177029481569
1994	16.737464591730728
1995	17.73385063221778
1996	18.766350669987716
1997	19.439188627427203
1998	20.342112078719303
1999	16.216675846207472
2000	15.298773918129935
2001	16.317855169719735
2002	19.60853700203316
2003	17.155341292534235
2004	15.035554184342855
2005	14.898959452941869
2006	15.072642668142485
2007	15.600208548627528
2008	16.87933976211548
2009	17.1984705006872
2010	15.58364465874636
2011	14.52387535287263
2012	15.049036575519988
2013	15.097959070586606
2014	15.441710255750628
2015	16.274128791636027
2016	16.43779911301113
2017	15.920788614777404
2018	15.617415718214586
2019	16.25321284869412
2020	18.188721314071163
2021	16.988590293186906
2022	17.29714589450266
2023	17.238664110635984