Year	Percent of GDP (Units)
1980	33.871
1981	32.835
1982	30.824
1983	27.615
1984	31.642
1985	30.669
1986	32.509
1987	36.452
1988	37.226
1989	37.927
1990	35.644
1991	33.646
1992	33.266
1993	35.217
1994	33.532
1995	31.360
1996	31.509
1997	29.450
1998	30.006
1999	30.659
2000	31.978
2001	31.626
2002	31.073
2003	33.166
2004	32.306
2005	32.941
2006	34.978
2007	34.417
2008	36.023
2009	31.731
2010	30.892
2011	29.701
2012	26.798
2013	25.549
2014	25.214
2015	24.859
2016	25.462
2017	26.650
2018	25.731
2019	24.042
2020	25.971
2021	28.612
2022	25.415
2023	23.913
2024	25.788
2025	25.728
2026	25.358
2027	25.506
2028	25.663
2029	25.702