Year	Percent of GDP (Units)
1980	14.657
1981	13.228
1982	12.805
1983	20.378
1984	19.592
1985	19.104
1986	19.728
1987	19.081
1988	20.070
1989	19.564
1990	17.695
1991	15.601
1992	15.496
1993	17.659
1994	18.940
1995	19.412
1996	18.334
1997	18.676
1998	18.181
1999	18.131
2000	19.318
2001	21.256
2002	20.998
2003	21.296
2004	20.292
2005	18.217
2006	17.229
2007	17.847
2008	15.714
2009	17.514
2010	25.345
2011	20.146
2012	17.432
2013	19.025
2014	19.401
2015	20.299
2016	20.928
2017	20.439
2018	19.987
2019	21.175
2020	21.125
2021	19.193
2022	17.197
2023	17.510
2024	18.313
2025	18.872
2026	19.556
2027	19.960
2028	20.334
2029	20.806