Year	Percent of GDP (Units)
1980	34.843
1981	35.624
1982	34.621
1983	33.472
1984	33.230
1985	32.862
1986	35.628
1987	33.530
1988	34.527
1989	33.358
1990	29.544
1991	22.895
1992	20.258
1993	15.762
1994	12.024
1995	17.729
1996	1.157
1997	9.727
1998	18.709
1999	19.844
2000	19.046
2001	21.351
2002	20.529
2003	22.074
2004	23.433
2005	27.740
2006	32.056
2007	33.606
2008	36.925
2009	28.538
2010	22.518
2011	21.358
2012	21.887
2013	21.006
2014	21.508
2015	21.000
2016	18.962
2017	19.817
2018	21.224
2019	21.007
2020	20.346
2021	21.079
2022	23.376
2023	18.850
2024	18.958
2025	20.916
2026	20.116
2027	19.504
2028	19.387
2029	19.107