Year	% of GDP
1981	17.772784253438925
1982	17.59218513250839
1983	17.576607598932608
1984	15.285393370168704
1985	16.88230850602532
1986	16.38873790431135
1987	15.43819014686148
1988	15.758413042783841
1989	14.653487746979335
1990	15.58700759604244
1991	16.68379992756003
1992	15.678139362199477
1993	16.109418312005
1994	17.713400444783897
1995	17.927188133712914
1996	17.743850211447597
1997	17.8533528890624
1998	16.760959165296054
1999	14.107450019999382
2000	11.334102411500147
2001	11.693326962017213
2002	11.1416791882265
2003	11.4059642989246
2004	11.377867928153952
2005	11.505528798462109
2006	11.128932019466909
2007	10.782713988318287
2008	10.595918273638057
2009	10.197525510595648
2010	9.192036740924456
2011	9.666701957458162
2012	10.010241301055919
2013	10.5049776247464
2014	10.845531686088446
2015	10.62852944574474
2016	10.150374293618299
2017	10.131047750624063
2018	10.640505058947422
2019	11.677604540937777
2020	11.967046056779102
2021	12.823044445850703
2022	13.25410493348041
2023	13.591308319607986