Year	National currency (Billions)
1988	0.285
1989	0.374
1990	0.314
1991	0.252
1992	1.630
1993	2.062
1994	2.223
1995	2.394
1996	3.062
1997	3.173
1998	4.241
1999	4.804
2000	5.659
2001	8.016
2002	6.626
2003	4.742
2004	4.941
2005	4.536
2006	5.293
2007	6.221
2008	6.883
2009	5.436
2010	5.731
2011	6.920
2012	8.356
2013	9.785
2014	11.371
2015	13.907
2016	12.854
2017	12.916
2018	16.389
2019	20.001
2020	18.725
2021	21.043
2022	24.848
2023	27.052
2024	29.002
2025	30.764
2026	33.076
2027	35.396
2028	37.599
2029	39.644