Year	Percent of GDP (Units)
1980	26.171
1981	33.778
1982	28.674
1983	28.496
1984	26.105
1985	18.465
1986	22.818
1987	15.362
1988	18.988
1989	22.517
1990	22.317
1991	19.901
1992	16.910
1993	20.179
1994	20.228
1995	7.696
1996	12.147
1997	2.250
1998	2.759
1999	1.999
2000	1.999
2001	52.200
2002	61.523
2003	49.654
2004	44.352
2005	40.322
2006	36.310
2007	20.604
2008	21.567
2009	26.018
2010	19.801
2011	8.442
2012	15.219
2013	21.686
2014	26.224
2015	17.382
2016	13.800
2017	13.708
2018	15.134
2019	14.163
2020	28.546
2021	27.044
2022	28.576
2023	24.351
2024	22.547
2025	21.441
2026	20.547
2027	20.113
2028	20.362
2029	19.413