Year	National currency (Billions)
1992	0.554
1993	1.315
1994	1.345
1995	2.478
1996	2.528
1997	2.489
1998	4.057
1999	5.311
2000	4.459
2001	3.920
2002	4.732
2003	5.435
2004	6.752
2005	10.003
2006	7.274
2007	8.029
2008	9.844
2009	8.959
2010	10.373
2011	10.239
2012	11.552
2013	9.852
2014	8.648
2015	9.621
2016	10.322
2017	12.196
2018	7.969
2019	9.338