Year	Percent of GDP (Units)
1988	178.546
1989	211.572
1990	221.106
1991	199.305
1992	148.954
1993	133.525
1994	119.639
1995	110.633
1996	105.750
1997	97.504
1998	105.687
1999	102.519
2000	87.395
2001	90.677
2002	90.339
2003	87.302
2004	78.544
2005	72.626
2006	59.178
2007	58.369
2008	52.691
2009	55.765
2010	57.465
2011	60.265
2012	69.052
2013	72.228
2014	72.344
2015	75.809
2016	74.352
2017	73.256
2018	73.200
2019	77.286
2020	87.208
2021	89.088
2022	91.098
2023	90.555
2024	90.818
2025	89.732
2026	86.922
2027	80.027
2028	78.344
2029	73.003