Year	% of GDP
1974	11.273953791533991
1975	13.531414084171395
1976	11.134057329625346
1977	11.731600147151859
1978	12.144329472665573
1979	13.661039479919065
1980	16.708559015296274
1981	16.681998860458556
1982	18.08815096117534
1983	19.162739203972134
1984	18.22627538060159
1985	18.785338781014914
1986	20.03520106740084
1987	18.231483066283612
1988	18.667313852132633
1989	19.722903038003444
1990	21.223368967341564
1991	22.258736641535066
1992	20.830343405768108
1993	23.809772698235705
1994	28.695782453334022
1995	29.96704578745594
1996	32.43080852186359
1997	34.02217707157276
1998	34.14752472300687
1999	33.89660996661826
2000	32.832287227028004
2001	33.65657058418113
2002	31.103276767750632
2003	28.28619119371305
2004	29.322638213851715
2005	29.056041287900282
2006	27.494810528533797
2007	29.834306801148948
2008	26.437652194967086
2009	27.57030657091929
2010	26.398478053650887
2011	25.90596316615626
2012	26.69152354149653
2013	26.985373181290345
2014	25.845762326831018
2015	24.922935172332576
2016	25.14314708791729
2017	24.93168533610279
2018	23.64410166335393
2019	23.22136801850537
2020	16.45717792436334
2021	15.602057772861421
2022	18.963600560895287
2023	23.737791413018194