Year	Percent of GDP (Units)
1990	21.263
1991	19.902
1992	20.437
1993	21.109
1994	19.228
1995	18.732
1996	18.456
1997	20.097
1998	20.219
1999	21.638
2000	20.781
2001	19.912
2002	21.445
2003	20.355
2004	21.165
2005	23.181
2006	24.179
2007	26.314
2008	28.881
2009	26.477
2010	24.777
2011	25.155
2012	25.909
2013	25.729
2014	25.897
2015	23.899
2016	24.125
2017	24.578
2018	24.243
2019	23.811
2020	26.998
2021	25.294
2022	28.695
2023	28.538
2024	28.198
2025	27.465
2026	26.913
2027	26.635
2028	26.476
2029	26.320