Year	Percent of GDP (Units)
1980	24.660
1981	27.538
1982	33.497
1983	30.763
1984	29.719
1985	28.990
1986	25.944
1987	27.267
1988	28.994
1989	29.848
1990	33.774
1991	31.778
1992	26.987
1993	29.446
1994	30.392
1995	31.820
1996	28.575
1997	25.640
1998	23.369
1999	23.945
2000	26.911
2001	20.722
2002	17.358
2003	22.839
2004	24.031
2005	27.686
2006	23.598
2007	23.558
2008	22.129
2009	20.032
2010	22.277
2011	17.682
2012	17.155
2013	16.174
2014	15.664
2015	24.140
2016	23.255
2017	20.616
2018	19.853
2019	20.568
2020	21.525
2021	21.439
2022	26.019
2023	19.493
2024	18.708
2025	18.415
2026	18.196
2027	18.013
2028	17.844
2029	17.680