Year	% of GDP
1981	21.416542694453167
1982	20.80950606843493
1983	19.49387343719133
1984	15.140856329306581
1985	17.198397684641424
1986	17.936888687065576
1987	15.758213050172069
1988	16.59596101156123
1989	14.739534745324542
1990	14.820271674983548
1991	15.63824286704412
1992	14.296061469612164
1993	15.48754863865098
1994	18.38619446730404
1995	18.87283654996377
1996	18.140352933038788
1997	18.602700319200967
1998	17.24720547824138
1999	13.536048162147285
2000	12.521017689151018
2001	12.504595548630462
2002	11.524378221814791
2003	11.576018621116607
2004	10.789033038585787
2005	10.46159927460145
2006	9.671762966191487
2007	9.5454274573844
2008	9.42960580556939
2009	9.25796692280432
2010	8.115733476620996
2011	8.71481828202574
2012	8.684453372508543
2013	9.972192757317234
2014	10.406239836245192
2015	10.16346496790953
2016	9.856826034819461
2017	9.952677247890513
2018	10.432222325999053
2019	11.38369864020367
2020	11.880783749562905
2021	13.136616801557308
2022	12.726001182226351
2023	13.204889453171202