Year	National Currency
1998-01-01	275648438273
1999-01-01	280684999932
2000-01-01	297756307423
2001-01-01	327911561435
2002-01-01	350146641519
2003-01-01	368332985190
2004-01-01	393289079395
2005-01-01	415368186012
2006-01-01	446478707055
2007-01-01	483678944246
2008-01-01	514619987589
2009-01-01	463714512542
2010-01-01	484605399114