Year	Percent of GDP (Units)
1988	36.007
1989	26.400
1990	26.555
1991	29.772
1992	26.034
1993	27.519
1994	26.460
1995	26.904
1996	27.701
1997	27.526
1998	25.423
1999	23.923
2000	24.262
2001	25.839
2002	24.364
2003	25.359
2004	25.256
2005	30.373
2006	34.275
2007	30.018
2008	33.900
2009	28.515
2010	31.657
2011	29.713
2012	28.462
2013	28.884
2014	28.458
2015	26.573
2016	21.284
2017	20.333
2018	23.750
2019	26.836
2020	23.260
2021	22.829
2022	27.844
2023	28.702
2024	26.225
2025	27.683
2026	27.601
2027	28.784
2028	29.169
2029	29.390