Year	Percent of GDP (Units)
1997	49.252
1998	27.053
1999	19.753
2000	22.786
2001	15.007
2002	20.316
2003	25.125
2004	19.388
2005	16.618
2006	13.859
2007	20.200
2008	14.315
2009	12.972
2010	11.965
2011	14.637
2012	11.429
2013	14.885
2014	20.634
2015	16.798
2016	19.489
2017	18.384
2018	15.683
2019	7.622
2020	14.989
2021	17.469
2022	8.517
2023	7.608
2024	12.727
2025	14.636
2026	15.650
2027	16.614
2028	17.674
2029	18.762