Year	Percent of GDP (Units)
1980	10.382
1981	10.382
1982	10.382
1983	10.382
1984	9.664
1985	9.664
1986	11.547
1987	12.574
1988	13.215
1989	13.289
1990	18.881
1991	16.088
1992	15.252
1993	15.594
1994	15.088
1995	15.376
1996	15.126
1997	15.252
1998	13.778
1999	14.318
2000	15.183
2001	12.249
2002	10.663
2003	15.655
2004	15.035
2005	12.732
2006	11.969
2007	8.527
2008	11.967
2009	6.285
2010	5.462
2011	9.089
2012	14.720
2013	11.583
2014	6.386
2015	7.255
2016	24.955
2017	11.974
2018	19.674
2019	17.311
2020	17.195
2021	17.834
2022	17.365
2023	15.702
2024	14.583
2025	14.362
2026	14.216
2027	14.085
2028	13.954
2029	13.949