Year	National currency (Billions)
1992	0.670
1993	1.398
1994	1.577
1995	1.778
1996	1.850
1997	2.255
1998	2.197
1999	2.320
2000	3.122
2001	3.287
2002	3.686
2003	6.017
2004	5.846
2005	5.957
2006	5.043
2007	4.921
2008	4.457
2009	4.542
2010	6.336
2011	8.493
2012	9.744
2013	7.557
2014	8.599
2015	8.764
2016	9.843
2017	10.550
2018	9.549
2019	10.150