Year	Percent of GDP (Units)
1996	41.221
1997	40.003
1998	44.884
1999	45.565
2000	44.323
2001	37.642
2002	35.975
2003	36.792
2004	36.939
2005	38.279
2006	39.505
2007	41.350
2008	49.103
2009	44.471
2010	40.132
2011	37.489
2012	39.252
2013	39.831
2014	38.929
2015	38.806
2016	39.024
2017	38.706
2018	39.649
2019	38.263
2020	35.175
2021	35.325
2022	32.141
2023	33.806
2024	35.119
2025	35.411
2026	35.423
2027	35.233
2028	35.125
2029	35.093