Year	Percent of GDP (Units)
1997	20.882
1998	19.661
1999	17.619
2000	22.879
2001	24.019
2002	23.110
2003	23.501
2004	23.661
2005	28.374
2006	28.999
2007	25.477
2008	24.139
2009	25.362
2010	23.923
2011	23.514
2012	21.846
2013	21.410
2014	23.098
2015	21.740
2016	25.183
2017	26.304
2018	27.554
2019	28.126
2020	30.544
2021	26.009
2022	20.549
2023	23.481
2024	26.013
2025	18.974
2026	16.433
2027	15.955
2028	15.513
2029	15.938