Quarter	US dollars
1999-03-31	81
1999-06-30	91
1999-09-30	93
1999-12-31	94
2000-03-31	74
2000-06-30	72
2000-09-30	87
2000-12-31	104
2001-03-31	97
2001-06-30	90
2001-09-30	195
2001-12-31	100
2002-03-31	90
2002-06-30	101
2002-09-30	99
2002-12-31	178
2003-03-31	113
2003-06-30	201
2003-09-30	170
2003-12-31	174
2004-03-31	204
2004-06-30	236
2004-09-30	256
2004-12-31	247
2005-03-31	215
2005-06-30	352
2005-09-30	311
2005-12-31	361
2006-03-31	369
2006-06-30	409
2006-09-30	389
2006-12-31	560
2007-03-31	738
2007-06-30	586
2007-09-30	834
2007-12-31	866
2008-03-31	840
2008-06-30	765
2008-09-30	823
2008-12-31	877
2009-03-31	856
2009-06-30	865
2009-09-30	818
2009-12-31	812
2010-03-31	820
2010-06-30	992
2010-09-30	1147
2010-12-31	1705
2011-03-31	1340
2011-06-30	1377
2011-09-30	1823
2011-12-31	1428
2012-03-31	1722
2012-06-30	1410
2012-09-30	1839
2012-12-31	1595
2013-03-31	1427
2013-06-30	1318
2013-09-30	1246
2013-12-31	1078
2014-03-31	1218
2014-06-30	972
2014-09-30	1021
2014-12-31	1061
2015-03-31	1258
2015-06-30	1312