Year	% of GDP
1977	6.104032831363968
1978	11.088170544363928
1979	10.633303820388337
1980	15.109699781217978
1981	16.075721131175605
1982	15.673767636550236
1983	17.87904091889337
1984	18.314861610828615
1985	25.11191202498553
1986	28.72770483900696
1987	33.12031239321179
1988	28.567977771059855
1989	33.36354776492718
1990	34.190407399093566
1991	27.86686207094663
1992	30.233620926667836
1993	24.03793838172162
1994	16.734652586685396
1995	18.021019911571763
1996	17.71608922711708
1997	16.31998019805935
1998	15.586169395004465
1999	17.489984342570363
2000	17.384173323078635
2001	16.89826099619695
2002	15.96933126343932
2003	13.496240416329607
2004	0.22018043756860886
2005	17.114572909344183
2006	17.41980310344249
2007	16.851166758868597
2008	16.99678391537863
2009	19.026779681434096
2010	20.360536727169322
2011	21.446615155367095
2012	22.983527717965433
2013	20.631305180773058
2014	17.63585508965598
2015	15.914054842184521
2016	15.495202869784286
2017	15.33907457492371
2018	16.798652955472466
2019	17.001448840249687
2020	23.496479120931056
2021	29.43903000671072
2022	33.61166242072029
2023	28.35533295593124