Year	Percent of GDP (Units)
1999	28.387
2000	27.313
2001	26.792
2002	24.156
2003	24.909
2004	24.356
2005	23.623
2006	27.186
2007	26.362
2008	26.639
2009	26.331
2010	23.911
2011	20.948
2012	19.720
2013	20.607
2014	23.169
2015	20.895
2016	19.172
2017	20.655
2018	19.656
2019	19.302
2020	18.227
2021	18.588
2022	18.922
2023	16.970
2024	17.538
2025	18.426
2026	19.481
2027	20.817
2028	21.115
2029	20.830