Year	Percent of GDP (Units)
1980	15.302
1981	13.434
1982	15.984
1983	15.842
1984	15.511
1985	14.640
1986	14.745
1987	16.026
1988	15.542
1989	16.562
1990	19.340
1991	18.802
1992	16.725
1993	18.867
1994	19.097
1995	20.894
1996	22.771
1997	24.407
1998	24.459
1999	24.521
2000	25.122
2001	24.435
2002	24.329
2003	26.236
2004	27.120
2005	26.769
2006	26.540
2007	22.738
2008	18.412
2009	15.637
2010	15.989
2011	15.537
2012	16.624
2013	20.262
2014	23.456
2015	30.295
2016	33.223
2017	35.142
2018	33.565
2019	34.915
2020	36.529
2021	37.325
2022	34.497
2023	36.418
2024	36.107
2025	35.411
2026	34.727
2027	34.108
2028	33.943
2029	33.763