Year	National currency (Billions)
1992	15.019
1993	16.954
1994	20.500
1995	20.977
1996	22.893
1997	24.702
1998	25.187
1999	25.234
2000	22.117
2001	24.053
2002	24.776
2003	24.118
2004	24.468
2005	25.098
2006	24.855
2007	25.210
2008	20.310
2009	22.784
2010	25.256
2011	31.749
2012	32.348
2013	28.966
2014	37.926
2015	30.105
2016	32.330
2017	29.093
2018	32.884
2019	34.145