Year	% of GDP
1972	11.04115234775719
1973	10.173345491094283
1974	12.583810613319324
1975	11.193867996803405
1976	10.783838200217474
1977	11.608921720183343
1978	11.661408976639438
1979	12.374128052045341
1980	13.143149674710925
1981	13.476976361436332
1982	12.64055576831681
1983	14.139582436160799
1984	14.106793780359933
1985	13.687836896425368
1986	13.616146658207112
1987	13.649990606198134
1988	14.80673226172963
1989	15.580572884683763
1990	16.907323010920415
1991	17.413503976745066
1992	15.591783986099875
1993	15.399276711039258
1994	16.035689018158948
1995	16.440930820127207
1996	16.726217629269495
1997	16.10547925720388
1998	13.788167441694267
1999	12.889215599898618
2000	12.976732901759828
2001	13.070218321755226
2002	13.470312762099237
2003	14.481568803231854
2004	14.853330905936515
2005	16.06186026569317
2006	15.636992711511166
2007	15.143156556839621
2008	15.384886404340653
2009	14.194230839514397
2010	14.932647554228778
2011	16.36183479370926
2012	15.440935674025532
2013	17.012524796725522
2014	15.808339070115018
2015	16.14061658864225
2016	15.36208783693372
2017	14.779676974741202
2018	14.914909411555966
2019	14.655383782932605
2020	14.457740249558992
2021	14.304663362349926
2022	14.380614623931502