Quarter	Units
1994-04-01	9089
1994-10-01	9073
1995-04-01	5576
1995-10-01	7422
1996-01-01	2914
1996-04-01	2491
1996-07-01	2672
1996-10-01	6405
1997-01-01	3502
1997-04-01	2565
1997-07-01	3921
1997-10-01	6769
1998-01-01	3867
1998-04-01	3638
1998-07-01	5312
1998-10-01	9366
1999-01-01	5100
1999-04-01	3872
1999-07-01	6029
1999-10-01	8733
2000-01-01	5521
2000-04-01	4222
2000-07-01	5420
2000-10-01	10044
2001-01-01	5034
2001-04-01	4505
2001-07-01	5956
2001-10-01	9264
2002-01-01	6531
2002-04-01	5047
2002-07-01	5798
2002-10-01	9915
2003-01-01	5017
2003-04-01	4764
2003-07-01	7072
2003-10-01	10274
2004-01-01	6099
2004-04-01	5988
2004-07-01	7845
2004-10-01	12336
2005-01-01	6452
2005-04-01	6068
2005-07-01	8457
2005-10-01	11868
2006-01-01	6929
2006-04-01	5188
2006-07-01	6049
2006-10-01	12024
2007-01-01	8337
2007-04-01	6758
2007-07-01	8731
2007-10-01	17823
2008-01-01	9070
2008-04-01	7357
2008-07-01	9559
2008-10-01	12394
2009-01-01	9314
2009-04-01	7770
2009-07-01	8720
2009-10-01	12669
2010-01-01	9199
2010-04-01	6921
2010-07-01	7415
2010-10-01	12907
2011-01-01	6112
2011-04-01	5393
2011-07-01	6616
2011-10-01	10509
2012-01-01	6230
2012-04-01	6819
2012-07-01	6905
2012-10-01	9513
2013-01-01	6441
2013-04-01	5310
2013-07-01	6150
2013-10-01	7345