Year	Percent of GDP (Units)
1981	37.056
1982	9.088
1983	12.273
1984	3.628
1985	11.982
1986	19.531
1987	16.719
1988	17.475
1989	18.909
1990	18.376
1991	19.981
1992	20.853
1993	21.081
1994	23.767
1995	23.964
1996	24.148
1997	24.999
1998	24.873
1999	25.528
2000	25.586
2001	25.135
2002	24.505
2003	24.114
2004	26.801
2005	30.938
2006	34.304
2007	31.113
2008	38.860
2009	35.834
2010	33.123
2011	36.187
2012	37.754
2013	39.033
2014	39.847
2015	37.650
2016	32.686
2017	30.774
2018	28.951
2019	28.845
2020	25.254
2021	25.070
2022	28.874
2023	28.339
2024	27.610
2025	27.366
2026	27.122
2027	26.986
2028	26.759
2029	26.691