Year	Percent of GDP
1988	45.343
1989	30.861
1990	27.878
1991	29.985
1992	28.792
1993	27.282
1994	26.481
1995	26.735
1996	28.161
1997	27.411
1998	27.251
1999	24.826
2000	24.087
2001	25.222
2002	24.565
2003	23.457
2004	23.343
2005	25.244
2006	29.883
2007	28.296
2008	28.197
2009	33.398
2010	31.521
2011	30.402
2012	31.086
2013	33.364
2014	35.202
2015	36.509
2016	35.241
2017	33.378
2018	31.569
2019	34.325
2020	34.314
2021	33.54
2022	33.195
2023	32.905
2024	32.601