Quarter	National Currency
1988-01-01	232511667994
1988-04-01	236769324538
1988-07-01	229410924702
1988-10-01	239453258114
1989-01-01	237824317657
1989-04-01	236375196320
1989-07-01	233672868835
1989-10-01	241048752436
1990-01-01	238394478797
1990-04-01	247304138501
1990-07-01	238502548280
1990-10-01	243426621382
1991-01-01	242443823565
1991-04-01	248204767674
1991-07-01	241666742940
1991-10-01	247391038390
1992-01-01	246249068574
1992-04-01	247454710282
1992-07-01	247328911343
1992-10-01	255851213766
1993-01-01	247877284630
1993-04-01	252586701729
1993-07-01	243272438911
1993-10-01	258848156425
1994-01-01	253410446865
1994-04-01	265944618428
1994-07-01	255996916234
1994-10-01	275339604257
1995-01-01	269155257098
1995-04-01	272827863738
1995-07-01	263172389925
1995-10-01	279049389195
1996-01-01	268817669461
1996-04-01	281100126815
1996-07-01	273605740153
1996-10-01	287091085601
1997-01-01	276734098792
1997-04-01	291878390806
1997-07-01	281173161573
1997-10-01	294405388005
1998-01-01	286460353857
1998-04-01	288519172272
1998-07-01	287626065543
1998-10-01	302955946253
1999-01-01	289397487947
1999-04-01	299836901238
1999-07-01	294968440156
1999-10-01	314933998891
2000-01-01	301738788804
2000-04-01	312668628516
2000-07-01	309112679024
2000-10-01	328282925955
2001-01-01	306581257660
2001-04-01	314035753196
2001-07-01	312918048914
2001-10-01	327493392176
2002-01-01	305460711756
2002-04-01	320267554894
2002-07-01	313774501908
2002-10-01	325616108406
2003-01-01	310293481932
2003-04-01	316128635196
2003-07-01	311698214108
2003-10-01	331556608866
2004-01-01	312248079004
2004-04-01	324294788298
2004-07-01	318524441769
2004-10-01	334154650845
2005-01-01	310910428089
2005-04-01	333376691593
2005-07-01	325347570450
2005-10-01	339221309868
2006-01-01	322165771507
2006-04-01	343162221903
2006-07-01	336641951437
2006-10-01	348411193531
2007-01-01	332122478279
2007-04-01	341728928297
2007-07-01	342042262641
2007-10-01	355959383406
2008-01-01	332663947424
2008-04-01	346089140745
2008-07-01	340036763473
2008-10-01	343098565050
2009-01-01	321637658458
2009-04-01	323034170013
2009-07-01	321725692682
2009-10-01	332035219506
2010-01-01	317279572111
2010-04-01	329534874834
2010-07-01	331441121215
2010-10-01	339644440433
2011-01-01	322626564275
2011-04-01	336469337053