Year	Percent of GDP (Units)
1980	28.130
1981	25.941
1982	28.042
1983	29.875
1984	30.705
1985	33.572
1986	34.916
1987	32.359
1988	28.927
1989	27.382
1990	30.525
1991	28.186
1992	31.653
1993	29.162
1994	25.155
1995	24.657
1996	26.267
1997	21.041
1998	18.101
1999	15.649
2000	19.670
2001	22.756
2002	22.173
2003	23.195
2004	24.217
2005	22.931
2006	27.467
2007	31.337
2008	33.093
2009	27.196
2010	27.003
2011	27.675
2012	26.580
2013	25.273
2014	24.976
2015	25.522
2016	23.741
2017	23.935
2018	23.350
2019	24.289
2020	24.534
2021	26.314
2022	26.753
2023	23.977
2024	24.596
2025	23.993
2026	24.272
2027	23.971
2028	23.427
2029	23.158