Year	% of GDP
1974	8.973997980016948
1975	8.824352423047976
1976	10.38142190745268
1977	12.152736721361775
1978	12.978800151464974
1979	13.86756163720533
1980	13.571313012291814
1981	12.767342445574313
1982	12.744325938542639
1983	12.92307941439243
1984	12.774428341706036
1986	13.066074494780754
1987	13.815672566902979
1988	12.787725227119552
1989	12.726811949021114
1990	11.743621181043647
1991	10.185312869935835
1992	10.542380934677578
1993	10.327628474207238
1994	9.34496671387627
1995	12.380856864131482
1996	12.538591383824878
1997	13.08038711391429
1998	13.447549599279057
1999	13.712305649228606
2000	12.694932564074183
2001	14.20169361739989
2002	14.300319971465266
2003	14.436707041747484
2004	15.168755581709693
2005	16.065258146187354
2006	16.759074752821192
2007	17.34315159286926
2008	18.119333797846252
2009	19.70574160629495
2010	20.46903558724242
2011	20.55520378991618
2012	21.88026193901782
2013	22.256717665854694
2014	24.772733842353976
2015	27.296402250308144
2016	28.275278131654915
2017	29.502381761790687
2018	30.271532685356945
2019	30.52157669433639
2020	30.756929356280242
2021	32.04403387025389
2022	34.167194163096454