Quarterly
1979-03-31 2.0149
1979-06-30 2.0546
1979-09-30 2.1924
1979-12-31 2.1336
1980-03-31 2.2286
1980-06-30 2.2257
1980-09-30 2.3201
1980-12-31 2.3921
1981-03-31 2.3696
1981-06-30 2.1459
1981-09-30 1.894
1981-12-31 1.8802
1982-03-31 1.8622
1982-06-30 1.807
1982-09-30 1.7582
1982-12-31 1.661
1983-03-31 1.5143
1983-06-30 1.5497
1983-09-30 1.5149
1983-12-31 1.4799
1984-03-31 1.4519
1984-06-30 1.4308
1984-09-30 1.3184
1984-12-31 1.2244
1985-03-31 1.0979
1985-06-30 1.2255
1985-09-30 1.3453
1985-12-31 1.3987
1986-03-31 1.3892
1986-06-30 1.4749
1986-09-30 1.4411
1986-12-31 1.3661
1987-03-31 1.489
1987-06-30 1.6199
1987-09-30 1.5864
1987-12-31 1.7358
1988-03-31 1.7639
1988-06-30 1.8208
1988-09-30 1.6568
1988-12-31 1.7428
1989-03-31 1.7105
1989-06-30 1.5752
1989-09-30 1.5297
1989-12-31 1.4994
1990-03-31 1.563
1990-06-30 1.5836
1990-09-30 1.7608
1990-12-31 1.863
1991-03-31 1.8231
1991-06-30 1.6428
1991-09-30 1.6211
1991-12-31 1.6882
1992-03-31 1.6795
1992-06-30 1.7183
1992-09-30 1.7923
1992-12-31 1.5356
1993-03-31 1.4458
1993-06-30 1.499
1993-09-30 1.4748
1993-12-31 1.4677
1994-03-31 1.4726
1994-06-30 1.4984
1994-09-30 1.5395
1994-12-31 1.5784
1995-03-31 1.5741
1995-06-30 1.5788
1995-09-30 1.5578
1995-12-31 1.5481
1996-03-31 1.5183
1996-06-30 1.5189
1996-09-30 1.5553
1996-12-31 1.6216
1997-03-31 1.6192
1997-06-30 1.6246
1997-09-30 1.6045
1997-12-31 1.6335
1998-03-31 1.6195
1998-06-30 1.6277
1998-09-30 1.624
1998-12-31 1.6562
1999-03-31 1.6294
1999-06-30 1.6087
1999-09-30 1.6045
1999-12-31 1.629
2000-03-31 1.6071
2000-06-30 1.54
2000-09-30 1.4873
2000-12-31 1.4529
2001-03-31 1.4543
2001-06-30 1.4069
2001-09-30 1.417
2001-12-31 1.4229
2002-03-31 1.3984
2002-06-30 1.432
2002-09-30 1.5167
2002-12-31 1.5357
2003-03-31 1.5678
2003-06-30 1.5839
2003-09-30 1.5731
2003-12-31 1.6578
2004-03-31 1.7827
2004-06-30 1.7541
2004-09-30 1.7694
2004-12-31 1.8265
2005-03-31 1.8627
2005-06-30 1.8371
2005-09-30 1.7805
2005-12-31 1.7508
2006-03-31 1.7604
2006-06-30 1.8409
2006-09-30 1.8824
2006-12-31 1.9136
2007-03-31 1.9469
2007-06-30 1.9746
2007-09-30 2.0005
2007-12-31 2.0203
2008-03-31 1.9321
2008-06-30 1.9207
2008-09-30 1.8509
2008-12-31 1.5654
2009-03-31 1.4345
2009-06-30 1.5527
2009-09-30 1.6395
2009-12-31 1.6304
2010-03-31 1.5547
2010-06-30 1.4905
2010-09-30 1.5476
2010-12-31 1.5752
2011-03-31 1.5932
2011-06-30 1.6188
2011-09-30 1.6029
2011-12-31 1.5664
2012-03-31 1.5661
2012-06-30 1.5802
2012-09-30 1.5785
2012-12-31 1.604
2013-03-31 1.5499
2013-06-30 1.5335
2013-09-30 1.5471
2013-12-31 1.6136
2014-03-31 1.6498
2014-06-30 1.6763
2014-09-30 1.662
2014-12-31 1.5788
2015-03-31 1.5119
2015-06-30 1.5317
2015-09-30 1.5464
2015-12-31 1.518
2016-03-31 1.4345
2016-06-30 1.4389
2016-09-30 1.3226
2016-12-31 1.252
2017-03-31 1.2527
2017-06-30 1.2953
2017-09-30 1.3242
2017-12-31 1.3433
2018-03-31 1.4136
2018-06-30 1.3845
2018-09-30 1.3269
2018-12-31 1.3111
2019-03-31 1.3255
2019-06-30 1.3051
2019-09-30 1.2485
2019-12-31 1.2994
2020-03-31 1.2887
2020-06-30 1.2438
2020-09-30 1.2939
2020-12-31 1.3232
2021-03-31 1.3815
2021-06-30 1.3998