Year	Percent of GDP (Units)
1980	23.460
1981	24.437
1982	20.672
1983	17.350
1984	18.635
1985	15.937
1986	15.999
1987	20.441
1988	23.534
1989	25.104
1990	22.137
1991	23.423
1992	24.617
1993	27.026
1994	23.085
1995	21.323
1996	18.778
1997	12.519
1998	11.607
1999	19.286
2000	29.357
2001	24.845
2002	18.910
2003	18.304
2004	17.702
2005	19.727
2006	20.480
2007	19.954
2008	20.598
2009	19.945
2010	14.283
2011	14.978
2012	13.969
2013	16.168
2014	16.558
2015	21.664
2016	22.084
2017	18.052
2018	15.595
2019	17.173
2020	25.490
2021	23.594
2022	23.236
2023	21.573
2024	21.240
2025	21.220
2026	21.325
2027	21.439
2028	21.601
2029	21.756