Year	Percent of GDP (Units)
1990	31.301
1991	31.425
1992	30.250
1993	29.722
1994	28.140
1995	27.884
1996	26.730
1997	28.540
1998	28.503
1999	29.950
2000	29.334
2001	28.712
2002	28.462
2003	26.616
2004	25.721
2005	27.389
2006	30.785
2007	32.087
2008	31.874
2009	31.557
2010	28.488
2011	31.385
2012	31.940
2013	33.618
2014	35.348
2015	35.372
2016	32.459
2017	33.099
2018	31.236
2019	31.923
2020	33.407
2021	30.472
2022	30.114
2023	33.572
2024	34.540
2025	32.042
2026	31.187
2027	31.536
2028	31.539
2029	31.395