Year	% of GDP
1975	25.096841566870374
1976	22.51582257728922
1977	22.930279774204777
1978	23.535484975475544
1979	22.572409554093447
1980	20.480456656127004
1981	18.485164465911872
1982	18.559629564358755
1983	18.392810160916994
1984	20.07593850652026
1985	20.874393527438837
1986	21.791217748097633
1987	21.68978997073075
1988	22.83530546496802
1989	22.297780638302147
1990	21.805076573877937
1991	21.197830425091475
1992	19.343728027904938
1993	19.188909256250415
1994	18.705030732349005
1995	21.3142474727056
1996	20.999628545505523
1997	22.068688563576874
1998	22.70105022574922
1999	22.288425056048542
2000	22.32915226268794
2001	22.081658768337324
2002	22.964168663730625
2003	23.62908281017035
2004	22.807877665445925
2005	22.123066771184966
2006	21.715753260634692
2007	21.013845618227492
2008	19.5605358727822
2009	19.224215113244313
2010	18.64331656828014
2011	17.855489343382356
2012	18.516978316375187
2013	19.253607549227052
2014	19.577920916415
2015	21.008190654804242
2016	21.919998013812197
2017	22.176032838985357
2018	22.346379440774523
2019	22.9344685004264
2020	21.089406844683037
2021	22.34620681534215
2022	22.09427410937136
2023	22.853846201192514