Year	Percent of GDP (Units)
1981	45.007
1982	45.416
1983	45.926
1984	47.003
1985	47.834
1986	52.004
1987	52.805
1988	52.364
1989	52.651
1990	51.700
1991	46.033
1992	29.125
1993	38.295
1994	32.177
1995	26.597
1996	28.622
1997	30.833
1998	36.188
1999	33.202
2000	34.528
2001	35.185
2002	35.501
2003	33.665
2004	31.820
2005	25.114
2006	26.193
2007	35.300
2008	37.629
2009	35.454
2010	31.575
2011	37.932
2012	36.060
2013	32.151
2014	32.144
2015	31.177
2016	39.677
2017	32.177
2018	28.406
2019	30.819
2020	37.124
2021	35.892
2022	33.738
2023	32.795
2024	34.728
2025	34.438
2026	34.182
2027	34.160
2028	33.916
2029	33.910