Year	Percent of GDP (Units)
2004	56.052
2005	67.274
2006	61.040
2007	53.960
2008	56.399
2009	46.180
2010	45.396
2011	48.114
2012	46.986
2013	42.187
2014	38.152
2015	30.634
2016	28.024
2017	33.569
2018	39.324
2019	36.113
2020	29.242
2021	36.713
2022	46.331
2023	42.603
2024	40.064
2025	38.404
2026	36.623
2027	35.244
2028	34.250
2029	33.536