Year	Percent of GDP (Units)
1980	35.188
1981	34.011
1982	32.854
1983	31.460
1984	31.323
1985	31.226
1986	31.159
1987	32.058
1988	34.041
1989	34.860
1990	35.451
1991	35.212
1992	33.537
1993	31.768
1994	30.652
1995	30.934
1996	32.027
1997	31.110
1998	29.591
1999	28.200
2000	28.417
2001	27.755
2002	25.899
2003	25.661
2004	25.638
2005	26.052
2006	26.078
2007	25.769
2008	25.870
2009	22.603
2010	22.590
2011	23.541
2012	24.005
2013	24.418
2014	25.036
2015	25.165
2016	24.836
2017	25.215
2018	25.642
2019	25.790
2020	25.246
2021	25.719
2022	26.588
2023	26.161
2024	26.305
2025	26.429
2026	26.303
2027	26.203
2028	26.109
2029	26.155