Year	Percent of GDP (Units)
1980	51.211
1981	48.905
1982	45.470
1983	44.527
1984	50.638
1985	46.385
1986	16.427
1987	20.822
1988	18.929
1989	20.724
1990	22.723
1991	27.174
1992	17.433
1993	19.722
1994	27.769
1995	30.689
1996	33.392
1997	38.921
1998	23.707
1999	30.342
2000	37.621
2001	39.538
2002	38.317
2003	40.447
2004	39.039
2005	45.660
2006	41.223
2007	46.723
2008	48.500
2009	34.551
2010	42.509
2011	46.658
2012	43.317
2013	42.298
2014	42.545
2015	37.127
2016	30.683
2017	29.242
2018	34.156
2019	34.506
2020	29.510
2021	36.855
2022	40.389
2023	38.347
2024	36.014
2025	35.897
2026	35.215
2027	34.678
2028	34.316
2029	33.996