Year	Percent of GDP (Units)
1980	22.909
1981	21.159
1982	25.853
1983	34.351
1984	32.829
1985	21.453
1986	19.459
1987	17.718
1988	19.689
1989	19.445
1990	15.684
1991	19.986
1992	22.964
1993	25.055
1994	20.357
1995	20.286
1996	18.571
1997	18.778
1998	22.949
1999	21.514
2000	19.317
2001	19.623
2002	19.693
2003	19.493
2004	19.865
2005	20.175
2006	22.215
2007	26.473
2008	27.296
2009	31.715
2010	30.926
2011	27.541
2012	27.046
2013	26.890
2014	29.018
2015	34.224
2016	30.898
2017	28.796
2018	26.123
2019	28.296
2020	27.691
2021	25.448
2022	26.427
2023	29.342
2024	29.605
2025	30.043
2026	30.498
2027	30.427
2028	30.085
2029	29.651