Quarter	National Currency
1988-01-01	22234256811
1988-04-01	23127615567
1988-07-01	21608569121
1988-10-01	23039688924
1989-01-01	23451026079
1989-04-01	24062954899
1989-07-01	22303924564
1989-10-01	23413776697
1990-01-01	23021163677
1990-04-01	25179078078
1990-07-01	22567928844
1990-10-01	26520328441
1991-01-01	22940929857
1991-04-01	25735780277
1991-07-01	23160972918
1991-10-01	27220485513
1992-01-01	23462515979
1992-04-01	26190089612
1992-07-01	23611938467
1992-10-01	27375585202
1993-01-01	23615010548
1993-04-01	25810717362
1993-07-01	23379562819
1993-10-01	26932940263
1994-01-01	23678350131
1994-04-01	26029572858
1994-07-01	24259290156
1994-10-01	27762461271
1995-01-01	25600319203
1995-04-01	28243410080
1995-07-01	25943643174
1995-10-01	29029906642
1996-01-01	26457909487
1996-04-01	29039531851
1996-07-01	26686845885
1996-10-01	29592472537
1997-01-01	27030354594
1997-04-01	30078057965
1997-07-01	27514310462
1997-10-01	31144505289
1998-01-01	28393838059
1998-04-01	29483901602
1998-07-01	29538988759
1998-10-01	33028497758
1999-01-01	29720755465
1999-04-01	30726814825
1999-07-01	29614697461
1999-10-01	32508118738
2000-01-01	30036215441
2000-04-01	31705505395
2000-07-01	30014645003
2000-10-01	33237712637
2001-01-01	31327494430
2001-04-01	33505524116
2001-07-01	31427097025
2001-10-01	34589372807
2002-01-01	31894883022
2002-04-01	34075627966
2002-07-01	31292949074
2002-10-01	34351838829
2003-01-01	32019392479
2003-04-01	33740330397
2003-07-01	31178256887
2003-10-01	34239964122
2004-01-01	31415858446
2004-04-01	32897257528
2004-07-01	31882433555
2004-10-01	34584007938
2005-01-01	32590804197
2005-04-01	34257170447
2005-07-01	32502197279
2005-10-01	35322443265
2006-01-01	33785759127
2006-04-01	35264436200
2006-07-01	33123757088
2006-10-01	36871683113
2007-01-01	35614315745
2007-04-01	37613371947
2007-07-01	35675771135
2007-10-01	39114213689
2008-01-01	37428646547
2008-04-01	39276116352
2008-07-01	36758941347
2008-10-01	39628535849
2009-01-01	36322128757
2009-04-01	36335697152
2009-07-01	33053634284
2009-10-01	34583839005
2010-01-01	33683376872
2010-04-01	34534389177
2010-07-01	32296066460
2010-10-01	34236270092
2011-01-01	33721113575
2011-04-01	34764720970