Year	Percent of GDP (Units)
2002	36.011
2003	39.178
2004	37.447
2005	36.756
2006	46.854
2007	52.289
2008	48.803
2009	44.627
2010	41.777
2011	38.545
2012	39.864
2013	41.336
2014	43.511
2015	40.420
2016	41.338
2017	40.281
2018	40.973
2019	42.206
2020	43.416
2021	43.121
2022	38.235
2023	41.781
2024	40.984
2025	40.452
2026	40.431
2027	40.431
2028	40.431
2029	40.431