Year	National currency (Billions)
1990	0.369
1991	0.378
1992	0.392
1993	0.392
1994	0.435
1995	0.421
1996	0.384
1997	0.384
1998	0.421
1999	0.588
2000	0.612
2001	0.643
2002	0.676
2003	0.68
2004	0.851
2005	0.953
2006	1.048
2007	0.968
2008	1.013
2009	1.103
2010	1.148
2011	1.201
2012	1.302
2013	1.391
2014	1.492
2015	1.549
2016	1.665
2017	1.511
2018	1.562
2019	1.6
2020	1.631
2021	1.66
2022	1.693
2023	1.732
2024	1.777