Year	Percent of GDP (Units)
1980	21.540
1981	20.155
1982	20.140
1983	21.089
1984	21.766
1985	22.133
1986	23.679
1987	22.885
1988	24.038
1989	25.348
1990	24.341
1991	24.350
1992	24.077
1993	22.902
1994	22.831
1995	23.081
1996	22.586
1997	22.866
1998	23.310
1999	22.581
2000	22.726
2001	22.592
2002	22.667
2003	21.851
2004	24.359
2005	24.159
2006	26.343
2007	28.241
2008	27.138
2009	24.393
2010	25.810
2011	27.848
2012	26.845
2013	26.611
2014	27.594
2015	28.327
2016	28.587
2017	28.797
2018	29.871
2019	30.040
2020	29.027
2021	30.921
2022	29.438
2023	30.373
2024	29.591
2025	29.609
2026	29.655
2027	29.653
2028	29.415
2029	29.224