Year	Percent of GDP (Units)
2004	63.131
2005	61.406
2006	55.575
2007	52.319
2008	53.110
2009	55.903
2010	55.101
2011	57.821
2012	56.846
2013	57.243
2014	52.513
2015	47.809
2016	41.829
2017	35.395
2018	32.649
2019	28.999
2020	41.827
2021	43.729
2022	46.445
2023	47.107
2024	49.282
2025	50.943
2026	52.454
2027	52.605
2028	52.657
2029	52.692