Year	National currency, Monthly Level
1990-01-01	413606300000
1991-01-01	459390000000
1992-01-01	611160000000
1993-01-01	694470000000
1994-01-01	842170000000
1995-01-01	1127480000000
1996-01-01	1344050000000
1997-01-01	1505450000000
1998-01-01	1772320000000
1999-01-01	2024180000000
2000-01-01	2316560000000
2001-01-01	2378130000000
2002-01-01	2746720000000
2003-01-01	3374780000000
2004-01-01	4521190000000
2005-01-01	6300170000000
2006-01-01	8091049000000
2007-01-01	9435344000000
2008-01-01	13939420000000
2009-01-01	12398413000000
2010-01-01	16002046000000
2011-01-01	21698249160000
2012-01-01	26149714178000
2013-01-01	27135827648000
2014-01-01	28239279108000
2015-01-01	25262631531000
2016-01-01	24294352047000
2017-01-01	29268846476000