Quarter	US dollars
1999-03-31	117
1999-06-30	70
1999-09-30	37
1999-12-31	88
2000-03-31	38
2000-06-30	102
2000-09-30	113
2000-12-31	195
2001-03-31	51
2001-06-30	31
2001-09-30	45
2001-12-31	25
2002-03-31	27
2002-06-30	42
2002-09-30	10
2002-12-31	19
2003-03-31	52
2003-06-30	74
2003-09-30	41
2003-12-31	70
2004-03-31	46
2004-06-30	62
2004-09-30	62
2004-12-31	34
2005-03-31	31
2005-06-30	28
2005-09-30	55
2005-12-31	39
2006-03-31	85
2006-06-30	142
2006-09-30	86
2006-12-31	122
2007-03-31	172
2007-06-30	168
2007-09-30	254
2007-12-31	245
2008-03-31	270
2008-06-30	267
2008-09-30	256
2008-12-31	240
2009-03-31	280
2009-06-30	338
2009-09-30	256
2009-12-31	198
2010-03-31	170
2010-06-30	173
2010-09-30	153
2010-12-31	153
2011-03-31	160
2011-06-30	139
2011-09-30	165
2011-12-31	101
2012-03-31	104
2012-06-30	92
2012-09-30	83
2012-12-31	58
2013-03-31	82
2013-06-30	49
2013-09-30	44
2013-12-31	47
2014-03-31	71
2014-06-30	71
2014-09-30	106
2014-12-31	82
2015-03-31	57
2015-06-30	73