Year	Percent of GDP (Units)
1980	15.001
1981	13.415
1982	14.652
1983	13.295
1984	12.568
1985	12.209
1986	12.311
1987	12.807
1988	12.740
1989	17.285
1990	18.070
1991	14.665
1992	15.861
1993	17.157
1994	19.470
1995	19.151
1996	19.939
1997	21.616
1998	22.731
1999	22.301
2000	19.481
2001	19.589
2002	16.137
2003	16.177
2004	16.605
2005	15.787
2006	16.902
2007	15.708
2008	15.047
2009	14.816
2010	15.299
2011	17.297
2012	17.477
2013	16.596
2014	17.412
2015	18.642
2016	19.060
2017	18.589
2018	19.056
2019	19.212
2020	18.702
2021	18.478
2022	20.530
2023	19.186
2024	19.869
2025	19.839
2026	19.575
2027	19.466
2028	19.477
2029	19.436