Year	% of GDP
1972	23.0075515367805
1973	22.02635530086586
1974	21.58944133200376
1975	29.75199708187104
1976	30.277255393620507
1977	33.01872845426445
1978	31.859454180192326
1979	32.7648455921791
1980	33.32717522509067
1981	35.114119910578204
1982	35.69989686051582
1983	35.52849764482602
1984	33.529649062266905
1985	32.03277457439829
1986	30.76592235227634
1987	32.02756804911339
1988	30.8506108642609
1989	28.07410349096412
1990	30.17893714722228
1991	30.227739846559555
1992	32.86225080450521
1993	32.328626253098705
1994	32.486288965055074
1995	37.631557482981165
1996	37.72746710544776
1997	37.527380209242956
1998	37.1402697851825
1999	35.71485338133468
2000	34.117105143920696
2001	35.24916300909104
2002	36.68120634787107
2003	38.21977850778085
2004	38.799236748213076
2005	38.17553034765776
2006	35.71784909134721
2007	33.98887936138617
2008	34.62851964951676
2009	38.672032437385376
2010	37.58777946176324
2011	37.758319712632584
2012	38.61740336710653
2013	38.551524591690935
2014	37.737316301754184
2015	37.21511925314445
2016	36.83489174543412
2017	37.758533855546986
2018	38.7943071095563
2019	39.51359576665182
2020	42.82367593575298
2021	39.4110448659676
2022	40.486330276412694