Year	% of GDP
1975	30.641819377875528
1976	29.004978679338432
1977	27.766154651672682
1978	28.161571374915837
1979	29.75109632915338
1980	30.503528408537946
1981	29.365597503270052
1982	28.04104916173743
1983	27.68943243374681
1984	28.332562035285626
1985	27.418414012121406
1986	27.14691892335928
1987	26.6778676235164
1988	28.96850777763343
1989	28.391356733113387
1990	26.680802474716252
1991	19.395118909287966
1992	16.974307262608967
1993	17.672312044273667
1994	20.64483800750656
1995	23.778610161511036
1996	23.290751389531234
1997	26.425893585238807
1998	27.665432700498698
1999	29.16980409515021
2000	31.265846181629144
2001	31.96296664732174
2002	30.90104914580023
2003	28.016126403058333
2004	29.594919699815087
2005	28.60328189290752
2006	28.760117079484477
2007	30.01359524344335
2008	28.26955686899168
2009	23.860235657113698
2010	23.885413404191713
2011	22.899058034057724
2012	21.480131362524215
2013	20.368265735357244
2014	20.690723139558862
2015	20.891329267978882
2016	21.28328740901736
2017	23.20276997888953
2018	23.42241789318914
2019	23.780933493608117
2020	25.05394903869846
2021	24.515326583476668
2022	24.02827519730203
2023	21.329673165940157