Year	Percent of GDP (Units)
1990	26.934
1991	26.820
1992	28.732
1993	28.210
1994	25.954
1995	21.866
1996	21.898
1997	22.135
1998	20.416
1999	18.326
2000	19.231
2001	17.352
2002	18.829
2003	21.711
2004	23.027
2005	25.034
2006	24.111
2007	24.690
2008	29.449
2009	27.121
2010	25.585
2011	24.093
2012	24.435
2013	26.477
2014	22.067
2015	26.420
2016	25.115
2017	23.654
2018	23.935
2019	23.929
2020	22.919
2021	20.111
2022	18.627
2023	17.508
2024	17.461
2025	17.515
2026	17.551
2027	17.612
2028	17.440
2029	17.277