Year	Percent of GDP (Units)
1990	20.216
1991	14.234
1992	17.698
1993	11.779
1994	7.998
1995	9.651
1996	13.909
1997	13.544
1998	14.018
1999	18.795
2000	25.311
2001	18.528
2002	21.225
2003	20.840
2004	29.473
2005	37.109
2006	32.659
2007	29.198
2008	24.436
2009	24.080
2010	20.843
2011	18.788
2012	18.677
2013	18.603
2014	15.962
2015	12.355
2016	16.621
2017	19.084
2018	21.541
2019	22.362
2020	23.774
2021	26.401
2022	20.736
2023	24.606
2024	26.315
2025	26.527
2026	27.694
2027	28.603
2028	29.676
2029	30.325