Year	Percent of GDP (Units)
1980	30.895
1981	23.382
1982	28.483
1983	24.774
1984	21.626
1985	22.357
1986	18.242
1987	17.814
1988	21.348
1989	21.720
1990	26.867
1991	16.445
1992	13.336
1993	11.193
1994	20.680
1995	19.292
1996	18.755
1997	19.736
1998	21.009
1999	17.783
2000	18.774
2001	17.614
2002	18.409
2003	18.805
2004	14.238
2005	16.576
2006	17.012
2007	18.501
2008	17.877
2009	16.605
2010	15.800
2011	17.329
2012	16.861
2013	17.343
2014	18.022
2015	19.689
2016	19.199
2017	18.875
2018	19.522
2019	20.254
2020	21.222
2021	20.500
2022	19.989
2023	19.483
2024	19.364
2025	20.187
2026	20.404
2027	20.363
2028	20.161
2029	19.973