Year	Percent of GDP (Units)
1998	19.270
1999	17.389
2000	14.621
2001	12.086
2002	10.729
2003	9.585
2004	9.428
2005	10.587
2006	11.556
2007	11.576
2008	11.073
2009	10.336
2010	9.848
2011	10.233
2012	16.370
2013	21.214
2014	22.462
2015	21.425
2016	19.565
2017	17.909
2018	17.629
2019	16.349
2020	16.750
2021	16.352
2022	16.642
2023	17.252
2024	17.562
2025	17.872
2026	18.182
2027	18.442
2028	18.702
2029	18.932