Year	Percent of GDP (Units)
1980	29.740
1981	29.417
1982	30.631
1983	23.497
1984	25.558
1985	23.147
1986	20.667
1987	23.016
1988	23.069
1989	20.958
1990	21.177
1991	22.240
1992	20.179
1993	18.824
1994	17.887
1995	18.192
1996	20.759
1997	21.775
1998	25.864
1999	23.570
2000	24.932
2001	22.901
2002	19.810
2003	21.292
2004	24.845
2005	28.871
2006	36.072
2007	29.575
2008	26.021
2009	15.323
2010	13.909
2011	15.583
2012	16.016
2013	15.470
2014	17.224
2015	19.404
2016	21.084
2017	21.741
2018	22.109
2019	20.674
2020	21.326
2021	22.924
2022	24.276
2023	24.389
2024	23.832
2025	23.954
2026	23.816
2027	23.889
2028	23.920
2029	23.971