Year	Percent of GDP (Units)
1980	24.801
1981	25.388
1982	26.247
1983	23.127
1984	22.913
1985	23.415
1986	21.464
1987	21.185
1988	22.834
1989	32.608
1990	28.407
1991	30.165
1992	29.207
1993	28.893
1994	28.364
1995	27.855
1996	27.109
1997	27.057
1998	27.160
1999	22.792
2000	32.293
2001	24.332
2002	22.060
2003	22.173
2004	21.243
2005	20.925
2006	19.494
2007	19.020
2008	19.752
2009	22.556
2010	20.138
2011	20.204
2012	20.128
2013	19.336
2014	18.156
2015	17.393
2016	17.521
2017	17.332
2018	17.369
2019	17.281
2020	18.162
2021	17.394
2022	16.120
2023	16.400
2024	16.770
2025	17.140
2026	17.510
2027	17.880
2028	18.250
2029	18.620