Year	Percent of GDP (Units)
1980	20.418
1981	15.471
1982	18.213
1983	16.521
1984	17.906
1985	17.868
1986	16.522
1987	18.751
1988	19.985
1989	21.027
1990	23.013
1991	22.201
1992	21.330
1993	19.230
1994	19.395
1995	20.140
1996	20.907
1997	22.050
1998	22.415
1999	23.837
2000	22.846
2001	22.654
2002	22.133
2003	23.070
2004	26.210
2005	26.527
2006	35.182
2007	31.805
2008	33.986
2009	29.965
2010	21.087
2011	20.641
2012	29.568
2013	28.505
2014	28.805
2015	27.603
2016	25.249
2017	28.228
2018	25.062
2019	27.323
2020	28.739
2021	24.511
2022	23.803
2023	27.643
2024	27.471
2025	25.555
2026	25.612
2027	25.628
2028	25.665
2029	25.737