Quarterly
1979-03-31 2.0515
1979-06-30 2.119
1979-09-30 2.1745
1979-12-31 2.1805
1980-03-31 2.1742
1980-06-30 2.2655
1980-09-30 2.3773
1980-12-31 2.4165
1981-03-31 2.2905
1981-06-30 1.9941
1981-09-30 1.8317
1981-12-31 1.901
1982-03-31 1.8125
1982-06-30 1.789
1982-09-30 1.7262
1982-12-31 1.6085
1983-03-31 1.4761
1983-06-30 1.5372
1983-09-30 1.4992
1983-12-31 1.4615
1984-03-31 1.4717
1984-06-30 1.394
1984-09-30 1.2532
1984-12-31 1.1547
1985-03-31 1.2132
1985-06-30 1.27
1985-09-30 1.3779
1985-12-31 1.3995
1986-03-31 1.4412
1986-06-30 1.4939
1986-09-30 1.3869
1986-12-31 1.4212
1987-03-31 1.5619
1987-06-30 1.589
1987-09-30 1.6057
1987-12-31 1.8622
1988-03-31 1.8612
1988-06-30 1.6754
1988-09-30 1.6452
1988-12-31 1.758
1989-03-31 1.66
1989-06-30 1.4807
1989-09-30 1.5443
1989-12-31 1.5235
1990-03-31 1.5532
1990-06-30 1.6517
1990-09-30 1.7724
1990-12-31 1.8422
1991-03-31 1.6694
1991-06-30 1.5646
1991-09-30 1.6813
1991-12-31 1.7548
1992-03-31 1.6419
1992-06-30 1.8038
1992-09-30 1.6936
1992-12-31 1.4784
1993-03-31 1.4745
1993-06-30 1.4701
1993-09-30 1.4672
1993-12-31 1.459
1994-03-31 1.4707
1994-06-30 1.5377
1994-09-30 1.5614
1994-12-31 1.5627
1995-03-31 1.6176
1995-06-30 1.5678
1995-09-30 1.5712
1995-12-31 1.5375
1996-03-31 1.5162
1996-06-30 1.5532
1996-09-30 1.5611
1996-12-31 1.6934
1997-03-31 1.6207
1997-06-30 1.6456
1997-09-30 1.5924
1997-12-31 1.6195
1998-03-31 1.6489
1998-06-30 1.6347
1998-09-30 1.6707
1998-12-31 1.6575
1999-03-31 1.6162
1999-06-30 1.584
1999-09-30 1.6434
1999-12-31 1.6104
2000-03-31 1.5997
2000-06-30 1.5258
2000-09-30 1.4857
2000-12-31 1.4992
2001-03-31 1.4153
2001-06-30 1.3876
2001-09-30 1.4448
2001-12-31 1.4275
2002-03-31 1.3999
2002-06-30 1.4917
2002-09-30 1.5393
2002-12-31 1.5709
2003-03-31 1.5464
2003-06-30 1.6131
2003-09-30 1.6173
2003-12-31 1.7402
2004-03-31 1.7783
2004-06-30 1.7654
2004-09-30 1.7655
2004-12-31 1.888
2005-03-31 1.8685
2005-06-30 1.7832
2005-09-30 1.7693
2005-12-31 1.7225
2006-03-31 1.7442
2006-06-30 1.863
2006-09-30 1.8701
2006-12-31 1.9544
2007-03-31 1.951
2007-06-30 1.9905
2007-09-30 2.0157
2007-12-31 1.9655
2008-03-31 1.9328
2008-06-30 1.9371
2008-09-30 1.7653
2008-12-31 1.4346
2009-03-31 1.4358
2009-06-30 1.645
2009-09-30 1.5985
2009-12-31 1.6111
2010-03-31 1.5143
2010-06-30 1.4959
2010-09-30 1.5712
2010-12-31 1.5589
2011-03-31 1.5913
2011-06-30 1.5978
2011-09-30 1.5533
2011-12-31 1.5407
2012-03-31 1.5941
2012-06-30 1.567
2012-09-30 1.6132
2012-12-31 1.6148
2013-03-31 1.5168
2013-06-30 1.5137
2013-09-30 1.6153
2013-12-31 1.6472
2014-03-31 1.6617
2014-06-30 1.7008
2014-09-30 1.6144
2014-12-31 1.5579
2015-03-31 1.4832
2015-06-30 1.5697
2015-09-30 1.5131
2015-12-31 1.4847
2016-03-31 1.442
2016-06-30 1.3484
2016-09-30 1.3096
2016-12-31 1.2426
2017-03-31 1.264
2017-06-30 1.3134
2017-09-30 1.3562
2017-12-31 1.3696
2018-03-31 1.4255
2018-06-30 1.3434
2018-09-30 1.3285
2018-12-31 1.2987
2019-03-31 1.325
2019-06-30 1.2886
2019-09-30 1.2464
2019-12-31 1.3337