Quarter	Percent
1999-03-31	3.0464
1999-06-30	2.6269
1999-09-30	2.6984
1999-12-31	3.4299
2000-03-31	3.5514
2000-06-30	4.2828
2000-09-30	4.7339
2000-12-31	5.0269
2001-03-31	4.7425
2001-06-30	4.5864
2001-09-30	4.2762
2001-12-31	3.4493
2002-03-31	3.3608
2002-06-30	3.4434
2002-09-30	3.3567
2002-12-31	3.1128
2003-03-31	2.6829
2003-06-30	2.358
2003-09-30	2.1364
2003-12-31	2.1475
2004-03-31	2.0599
2004-06-30	2.0829
2004-09-30	2.1159
2004-12-31	2.1625
2005-03-31	2.1391
2005-06-30	2.1242
2005-09-30	2.131
2005-12-31	2.3414
2006-03-31	2.6162
2006-06-30	2.896
2006-09-30	3.2214
2006-12-31	3.5905
2007-03-31	3.8211
2007-06-30	4.0676
2007-09-30	4.4928
2007-12-31	4.7161
2008-03-31	4.4768
2008-06-30	4.858
2008-09-30	4.9776
2008-12-31	4.2374
2009-03-31	2.0047
2009-06-30	1.307
2009-09-30	0.8404
2009-12-31	0.6794
2010-03-31	0.6059
2010-06-30	0.6262
2010-09-30	0.8147
2010-12-31	0.958
2011-03-31	1.044
2011-06-30	1.3654
2011-09-30	1.5087
2011-12-31	1.4345
2012-03-31	0.9618
2012-06-30	0.613
2012-09-30	0.2528
2012-12-31	0.1308
2013-03-31	0.1362
2013-06-30	0.126
2013-09-30	0.151
2013-12-31	0.1943
2014-03-31	0.2675
2014-06-30	0.2678
2014-09-30	0.1316
2014-12-31	0.0584
2015-03-31	0.0281
2015-06-30	0.0113
2015-09-30	0.0262
2015-12-31	0.0902
2016-03-31	0.1989
2016-06-30	0.2754
2016-09-30	0.3144
2016-12-31	0.3279
2017-03-31	0.3489
2017-06-30	0.3669
2017-09-30	0.3753
2017-12-31	0.3801
2018-03-31	0.3807
2018-06-30	0.3578
2018-09-30	0.3574
2018-12-31	0.3553
2019-03-31	0.337
2019-06-30	0.3586
2019-09-30	0.428
2019-12-31	0.4373
2020-03-31	0.4212
2020-06-30	0.2878
2020-09-30	0.4815
2020-12-31	0.5444
2021-03-31	0.5509
2021-06-30	0.5458