Quarterly
1975-03-31 2.3955
1975-06-30 2.1191
1975-09-30 1.9937
1975-12-31 1.9915
1976-03-31 1.946
1976-06-30 1.8423
1976-09-30 1.7133
1976-12-31 1.7208
1977-03-31 1.8216
1977-06-30 1.8231
1977-09-30 1.8756
1977-12-31 2.0996
1978-03-31 2.1093
1978-06-30 2.0914
1978-09-30 2.3322
1978-12-31 2.4182
1979-03-31 2.4004
1979-06-30 2.538
1979-09-30 2.5532
1979-12-31 2.6055
1980-03-31 2.5799
1980-06-30 2.712
1980-09-30 2.7953
1980-12-31 2.857
1981-03-31 2.6559
1981-06-30 2.3261
1981-09-30 2.1847
1981-12-31 2.2678
1982-03-31 2.1942
1982-06-30 2.2532
1982-09-30 2.0938
1982-12-31 1.9911
1983-03-31 1.8267
1983-06-30 1.8836
1983-09-30 1.8432
1983-12-31 1.807
1984-03-31 1.8404
1984-06-30 1.7879
1984-09-30 1.6331
1984-12-31 1.5303
1985-03-31 1.6826
1985-06-30 1.7827
1985-09-30 1.9272
1985-12-31 2.0208
1986-03-31 2.0648
1986-06-30 2.1274
1986-09-30 2.0104
1986-12-31 2.0496
1987-03-31 2.0988
1987-06-30 2.1467
1987-09-30 2.1356
1987-12-31 2.4525
1988-03-31 2.3243
1988-06-30 2.0683
1988-09-30 2.0502
1988-12-31 2.1573
1989-03-31 2.0118
1989-06-30 1.8567
1989-09-30 1.9075
1989-12-31 1.8676
1990-03-31 1.9261
1990-06-30 2.0323
1990-09-30 2.1617
1990-12-31 2.2382
1991-03-31 2.0144
1991-06-30 1.8509
1991-09-30 1.9805
1991-12-31 2.1586
1992-03-31 2.0646
1992-06-30 2.2798
1992-09-30 2.2225
1992-12-31 1.9256
1993-03-31 1.8925
1993-06-30 1.9248
1993-09-30 1.9978
1993-12-31 1.9569
1994-03-31 2.0531
1994-06-30 2.1324
1994-09-30 2.1153
1994-12-31 2.1945
1995-03-31 2.2833
1995-06-30 2.1856
1995-09-30 2.1313
1995-12-31 2.1149
1996-03-31 2.0798
1996-06-30 2.1216
1996-09-30 2.1311
1996-12-31 2.3472
1997-03-31 2.2448
1997-06-30 2.2949
1997-09-30 2.2336
1997-12-31 2.3546
1998-03-31 2.3821
1998-06-30 2.4509
1998-09-30 2.5946
1998-12-31 2.5567
1999-03-31 2.4413
1999-06-30 2.331
1999-09-30 2.4199
1999-12-31 2.3397
2000-03-31 2.3146
2000-06-30 2.2442
2000-09-30 2.2245
2000-12-31 2.2438
2001-03-31 2.2385
2001-06-30 2.1352
2001-09-30 2.3228
2001-12-31 2.3231
2002-03-31 2.2723
2002-06-30 2.3207
2002-09-30 2.4941
2002-12-31 2.5427
2003-03-31 2.3251
2003-06-30 2.2426
2003-09-30 2.2421
2003-12-31 2.3144
2004-03-31 2.4161
2004-06-30 2.4316
2004-09-30 2.2911
2004-12-31 2.301
2005-03-31 2.287
2005-06-30 2.1955
2005-09-30 2.0527
2005-12-31 2.006
2006-03-31 2.0231
2006-06-30 2.0565
2006-09-30 2.0842
2006-12-31 2.277
2007-03-31 2.2622
2007-06-30 2.1346
2007-09-30 2.0248
2007-12-31 1.965
2008-03-31 2.039
2008-06-30 2.0192
2008-09-30 1.8947
2008-12-31 1.7744
2009-03-31 1.8033
2009-06-30 1.9126
2009-09-30 1.7168
2009-12-31 1.6931
2010-03-31 1.5387
2010-06-30 1.59
2010-09-30 1.6163
2010-12-31 1.5558
2011-03-31 1.5592
2011-06-30 1.5496
2011-09-30 1.6235
2011-12-31 1.5772
2012-03-31 1.5973
2012-06-30 1.5992
2012-09-30 1.5887
2012-12-31 1.6084
2013-03-31 1.5425
2013-06-30 1.6001
2013-09-30 1.6646
2013-12-31 1.7576
2014-03-31 1.8402
2014-06-30 1.821
2014-09-30 1.8114
2014-12-31 1.8074
2015-03-31 1.8805
2015-06-30 1.9635
2015-09-30 2.0309
2015-12-31 2.0584
2016-03-31 1.8594
2016-06-30 1.7446
2016-09-30 1.7073
2016-12-31 1.6576
2017-03-31 1.6683
2017-06-30 1.687
2017-09-30 1.6773
2017-12-31 1.6935
2018-03-31 1.8093
2018-06-30 1.737
2018-09-30 1.6858
2018-12-31 1.7393
2019-03-31 1.7409
2019-06-30 1.6633
2019-09-30 1.6313
2019-12-31 1.7202
2020-03-31 1.7651
2020-06-30 1.6835
2020-09-30 1.7266
2020-12-31 1.7378
2021-03-31 1.7336
2021-06-30 1.7112
2021-09-30 1.7083
2021-12-31 1.7166
2022-03-31 1.6439
2022-06-30 1.5661
2022-09-30 1.5352
2022-12-31 1.6283
2023-03-31 1.6735
2023-06-30 1.6823
2023-09-30 1.6504
2023-12-31 1.6808