Quarterly Percent
1981-03-31 16.8469
1981-06-30 17.6834
1981-09-30 18.3818
1981-12-31 14.3643
1982-03-31 15.0337
1982-06-30 15.0645
1982-09-30 12.5663
1982-12-31 9.8882
1983-03-31 9.1677
1983-06-30 9.3473
1983-09-30 10.0779
1983-12-31 9.8512
1984-03-31 10.0909
1984-06-30 11.4248
1984-09-30 11.8731
1984-12-31 9.8326
1985-03-31 8.9584
1985-06-30 8.1855
1985-09-30 8.0711
1985-12-31 8.083
1986-03-31 7.8505
1986-06-30 6.9227
1986-09-30 6.228
1986-12-31 6.0783
1987-03-31 6.3156
1987-06-30 7.0944
1987-09-30 7.1626
1987-12-31 7.9001
1988-03-31 6.8996
1988-06-30 7.4243
1988-09-30 8.3435
1988-12-31 8.9546
1989-03-31 9.7946
1989-06-30 9.7208
1989-09-30 8.8896
1989-12-31 8.5868
1990-03-31 8.3701
1990-06-30 8.4257
1990-09-30 8.1348
1990-12-31 8.0625
1991-03-31 6.849
1991-06-30 6.1335
1991-09-30 5.8188
1991-12-31 5.0322
1992-03-31 4.1888
1992-06-30 3.9815
1992-09-30 3.3511
1992-12-31 3.5547
1993-03-31 3.2154
1993-06-30 3.2092
1993-09-30 3.1982
1993-12-31 3.3581
1994-03-31 3.5203
1994-06-30 4.4228
1994-09-30 4.9033
1994-12-31 5.886
1995-03-31 6.2377
1995-06-30 6.053
1995-09-30 5.8142
1995-12-31 5.7636
1996-03-31 5.3362
1996-06-30 5.4357
1996-09-30 5.512
1996-12-31 5.4742
1997-03-31 5.5027
1997-06-30 5.7283
1997-09-30 5.6435
1997-12-31 5.7627
1998-03-31 5.6077
1998-06-30 5.619
1998-09-30 5.5441
1998-12-31 5.2222
1999-03-31 4.933
1999-06-30 5.0013
1999-09-30 5.4006
1999-12-31 6.1042
2000-03-31 6.0646
2000-06-30 6.6034
2000-09-30 6.6571
2000-12-31 6.6309
2001-03-31 5.2909
2001-06-30 4.1119
2001-09-30 3.4102
2001-12-31 2.1046
2002-03-31 1.8582
2002-06-30 1.8747
2002-09-30 1.7728
2002-12-31 1.5294
2003-03-31 1.2814
2003-06-30 1.189
2003-09-30 1.0902
2003-12-31 1.1246
2004-03-31 1.0707
2004-06-30 1.2628
2004-09-30 1.7239
2004-12-31 2.2673
2005-03-31 2.8095
2005-06-30 3.2515
2005-09-30 3.7504
2005-12-31 4.3113
2006-03-31 4.7486
2006-06-30 5.1975
2006-09-30 5.3976
2006-12-31 5.3305
2007-03-31 5.3185
2007-06-30 5.3176
2007-09-30 5.4455
2007-12-31 5.0389
2008-03-31 3.2712
2008-06-30 2.934
2008-09-30 3.1941
2008-12-31 3.4807
2009-03-31 1.5241
2009-06-30 1.0814
2009-09-30 0.7025
2009-12-31 0.442
2010-03-31 0.412
2010-06-30 0.668
2010-09-30 0.5987
2010-12-31 0.4426
2011-03-31 0.4313
2011-06-30 0.3753
2011-09-30 0.3929
2011-12-31 0.4746
2012-03-31 0.427
2012-06-30 0.4588
2012-09-30 0.4432
2012-12-31 0.3511
2013-03-31 0.4088
2013-06-30 0.3768
2013-09-30 0.3051
2013-12-31 0.2468
2014-03-31 0.2403
2014-06-30 0.2569
2014-09-30 0.3092
2014-12-31 0.3092
2015-03-31 0.3852
2015-06-30 0.3519
2015-09-30 0.4485
2015-12-31 0.674
2016-03-31 0.7649
2016-06-30 0.8146
2016-09-30 0.9102
2016-12-31 0.9307
2017-03-31 1.0652
2017-06-30 1.1911
2017-09-30 1.338
2017-12-31 1.5087
2018-03-31 2.0033
2018-06-30 2.3884
2018-09-30 2.395
2018-12-31 2.6652
2019-03-31 2.7062
2019-06-30 2.5148
2019-09-30 2.2042
2019-12-31 1.9309
2020-03-31 1.5119
2020-06-30 0.4989
2020-09-30 0.2014
2020-12-31 0.1912
2021-03-31 0.1908
2021-06-30 0.1666