MAR1997 28,961
APR1997 29,294
MAY1997 29,131
JUN1997 29,655
JUL1997 29,954
AUG1997 30,037
SEP1997 30,143
OCT1997 30,359
NOV1997 30,268
DEC1997 30,545
JAN1998 30,593
FEB1998 30,926
MAR1998 30,938
APR1998 31,124
MAY1998 31,144
JUN1998 31,173
JUL1998 31,300
AUG1998 31,421
SEP1998 31,373
OCT1998 31,357
NOV1998 31,303
DEC1998 31,321
JAN1999 31,523
FEB1999 31,213
MAR1999 31,019
APR1999 31,141
MAY1999 31,080
JUN1999 30,973
JUL1999 30,823
AUG1999 31,031
SEP1999 31,014
OCT1999 30,925
NOV1999 31,059
DEC1999 31,141
JAN2000 31,010
FEB2000 30,992
MAR2000 30,874
APR2000 30,804
MAY2000 30,496
JUN2000 30,278
JUL2000 29,815
AUG2000 29,690
SEP2000 29,565
OCT2000 29,519
NOV2000 30,032
DEC2000 30,253
JAN2001 30,325
FEB2001 30,907
MAR2001 30,830
APR2001 30,940
MAY2001 31,177
JUN2001 31,323
JUL2001 31,414
AUG2001 31,873
SEP2001 32,166
OCT2001 32,683
NOV2001 33,348
DEC2001 33,892
JAN2002 34,406
FEB2002 34,951
MAR2002 35,028
APR2002 35,204
MAY2002 35,285
JUN2002 35,719
JUL2002 35,910
AUG2002 36,212
SEP2002 36,492
OCT2002 36,506
NOV2002 36,689
DEC2002 36,933
JAN2003 36,971
FEB2003 36,655
MAR2003 37,004
APR2003 37,300
MAY2003 36,746
JUN2003 37,757
JUL2003 35,745
AUG2003 34,932
SEP2003 34,153
OCT2003 33,801
NOV2003 33,711
DEC2003 33,370
JAN2004 31,366
FEB2004 31,298
MAR2004 31,427
APR2004 31,364
MAY2004 30,609
JUN2004 30,439
JUL2004 30,327
AUG2004 30,205
SEP2004 30,110
OCT2004 29,689
NOV2004 29,472
DEC2004 29,249
JAN2005 29,080
FEB2005 27,871
MAR2005 28,293
APR2005 28,199
MAY2005 28,705
JUN2005 29,077
JUL2005 28,356
AUG2005 26,902
SEP2005 26,073
OCT2005 25,798
NOV2005 25,906
DEC2005 25,827
JAN2006 26,091
FEB2006 26,207
MAR2006 26,497
APR2006 26,352
MAY2006 26,720
JUN2006 26,860
JUL2006 26,704
AUG2006 26,865
SEP2006 26,616
OCT2006 26,901
NOV2006 26,987
DEC2006 26,680
JAN2007 27,070
FEB2007 27,077
MAR2007 27,204
APR2007 27,339
MAY2007 27,588
JUN2007 27,650
JUL2007 27,900
AUG2007 28,164
SEP2007 27,877
OCT2007 28,046
NOV2007 27,954
DEC2007 27,878
JAN2008 28,239
FEB2008 28,306
MAR2008 28,297
APR2008 28,486
MAY2008 28,433
JUN2008 28,671
JUL2008 28,718
AUG2008 28,653
SEP2008 28,597
OCT2008 28,937
NOV2008 29,045
DEC2008 28,989
JAN2009 28,907
FEB2009 28,907 29,152
MAR2009 28,813 29,313
APR2009 29,139 29,399
MAY2009 28,905 29,614
JUN2009 29,121 29,788
JUL2009 23,953 29,864
AUG2009 21,407 30,013
SEP2009 20,245 29,844
OCT2009 19,603 30,144
NOV2009 30,142 19,547
DEC2009 30,021 19,492
JAN2010 30,393 19,437
FEB2010 30,491 19,381
MAR2010 30,663 19,326
APR2010 30,758 19,270
MAY2010 30,983 19,215
JUN2010 31,168 19,160
JUL2010 31,253 19,216
AUG2010 31,411 19,272
SEP2010 31,251 19,329
OCT2010 31,555 19,386
NOV2010 31,555 19,443
DEC2010 31,431 19,500
JAN2011 31,800 19,557
FEB2011 31,896 19,613
MAR2011 32,064 19,670
APR2011 32,156 19,727
MAY2011 32,378 19,784
JUN2011 32,558 19,841