Year	Percent of GDP (Units)
1997	84.865
1998	107.915
1999	88.152
2000	72.895
2001	45.068
2002	31.963
2003	22.367
2004	15.092
2005	9.012
2006	5.587
2007	4.047
2008	4.706
2009	4.081
2010	6.215
2011	10.019
2012	13.762
2013	16.014
2014	12.304
2015	14.545
2016	18.520
2017	19.980
2018	18.663
2019	15.272
2020	13.323
2021	10.653
2022	5.772
2023	4.703
2024	4.655
2025	4.505
2026	4.365
2027	4.242
2028	4.137
2029	4.046