Year	Percent of GDP (Units)
1980	29.332
1981	24.195
1982	28.764
1983	26.739
1984	27.207
1985	36.667
1986	35.942
1987	42.102
1988	53.265
1989	43.324
1990	46.413
1991	45.685
1992	43.363
1993	42.780
1994	29.657
1995	32.201
1996	38.265
1997	38.438
1998	42.281
1999	37.387
2000	31.257
2001	28.006
2002	23.239
2003	27.765
2004	27.802
2005	33.505
2006	38.822
2007	41.082
2008	34.469
2009	21.890
2010	28.756
2011	35.779
2012	33.036
2013	30.782
2014	36.779
2015	31.776
2016	30.818
2017	31.350
2018	26.581
2019	23.825
2020	26.497
2021	28.167
2022	28.390
2023	29.666
2024	29.723
2025	32.051
2026	32.949
2027	32.803
2028	32.970
2029	32.944