Year	Percent of GDP (Units)
1980	43.951
1981	47.663
1982	60.348
1983	62.576
1984	57.814
1985	47.726
1986	47.171
1987	51.887
1988	53.677
1989	50.540
1990	31.877
1991	30.200
1992	34.577
1993	37.691
1994	23.176
1995	21.455
1996	27.841
1997	18.595
1998	20.000
1999	20.000
2000	20.000
2001	20.000
2002	20.000
2003	20.000
2004	20.000
2005	18.360
2006	17.216
2007	14.831
2008	12.422
2009	15.173
2010	15.926
2011	15.432
2012	14.855
2013	15.355
2014	18.286
2015	17.286
2016	17.786
2017	18.286
2018	18.786
2019	19.286
2020	19.931
2021	21.772
2022	20.946
2023	22.485
2024	27.784
2025	26.211
2026	25.855
2027	23.452
2028	21.769
2029	21.091