Year	National currency (Billions)
1990	0.916
1991	1.130
1992	1.266
1993	1.224
1994	1.346
1995	1.331
1996	1.429
1997	1.450
1998	1.908
1999	1.983
2000	1.861
2001	1.917
2002	1.409
2003	1.240
2004	1.585
2005	1.145
2006	1.238
2007	0.825
2008	0.859
2009	1.238
2010	1.365
2011	1.324
2012	1.541
2013	1.612
2014	1.439
2015	4.194
2016	8.475
2017	12.469
2018	15.724
2019	17.764
2020	19.819
2021	20.775
2022	17.550
2023	15.264
2024	14.836
2025	14.290
2026	13.928
2027	13.756
2028	13.699
2029	14.055