Quarterly
1979-03-31 2.0303
1979-06-30 2.0722
1979-09-30 2.2202
1979-12-31 2.1523
1980-03-31 2.2449
1980-06-30 2.2611
1980-09-30 2.3511
1980-12-31 2.3923
1981-03-31 2.3304
1981-06-30 2.1046
1981-09-30 1.8583
1981-12-31 1.8784
1982-03-31 1.8491
1982-06-30 1.7878
1982-09-30 1.7309
1982-12-31 1.6503
1983-03-31 1.5234
1983-06-30 1.5519
1983-09-30 1.5107
1983-12-31 1.4731
1984-03-31 1.4388
1984-06-30 1.404
1984-09-30 1.3021
1984-12-31 1.2173
1985-03-31 1.1051
1985-06-30 1.2444
1985-09-30 1.3638
1985-12-31 1.4236
1986-03-31 1.4236
1986-06-30 1.4974
1986-09-30 1.4756
1986-12-31 1.4128
1987-03-31 1.5275
1987-06-30 1.6329
1987-09-30 1.6083
1987-12-31 1.7481
1988-03-31 1.7883
1988-06-30 1.8348
1988-09-30 1.683
1988-12-31 1.7767
1989-03-31 1.7343
1989-06-30 1.6116
1989-09-30 1.5781
1989-12-31 1.5603
1990-03-31 1.6297
1990-06-30 1.6492
1990-09-30 1.8311
1990-12-31 1.9194
1991-03-31 1.8807
1991-06-30 1.6867
1991-09-30 1.6652
1991-12-31 1.7493
1992-03-31 1.744
1992-06-30 1.782
1992-09-30 1.8723
1992-12-31 1.5651
1993-03-31 1.4659
1993-06-30 1.5236
1993-09-30 1.4945
1993-12-31 1.4833
1994-03-31 1.4824
1994-06-30 1.5023
1994-09-30 1.5494
1994-12-31 1.5843
1995-03-31 1.5818
1995-06-30 1.5936
1995-09-30 1.5704
1995-12-31 1.5579
1996-03-31 1.5283
1996-06-30 1.522
1996-09-30 1.5539
1996-12-31 1.633
1997-03-31 1.6283
1997-06-30 1.6329
1997-09-30 1.6206
1997-12-31 1.6525
1998-03-31 1.6389
1998-06-30 1.6462
1998-09-30 1.645
1998-12-31 1.6699
1999-03-31 1.6305
1999-06-30 1.6059
1999-09-30 1.603
1999-12-31 1.6319
2000-03-31 1.6055
2000-06-30 1.5324
2000-09-30 1.4809
2000-12-31 1.4482
2001-03-31 1.4576
2001-06-30 1.4165
2001-09-30 1.4325
2001-12-31 1.4373
2002-03-31 1.4187
2002-06-30 1.4538
2002-09-30 1.5413
2002-12-31 1.562
2003-03-31 1.5935
2003-06-30 1.6104
2003-09-30 1.6017
2003-12-31 1.6942
2004-03-31 1.8244
2004-06-30 1.7916
2004-09-30 1.8047
2004-12-31 1.853
2005-03-31 1.8813
2005-06-30 1.8482
2005-09-30 1.7816
2005-12-31 1.747
2006-03-31 1.7537
2006-06-30 1.8332
2006-09-30 1.8778
2006-12-31 1.9158
2007-03-31 1.954
2007-06-30 1.9852
2007-09-30 2.0174
2007-12-31 2.0399
2008-03-31 1.9666
2008-06-30 1.9572
2008-09-30 1.8817
2008-12-31 1.5715
2009-03-31 1.4334
2009-06-30 1.553
2009-09-30 1.6404
2009-12-31 1.6334
2010-03-31 1.5574
2010-06-30 1.4907
2010-09-30 1.5502
2010-12-31 1.58
2011-03-31 1.6019
2011-06-30 1.6266
2011-09-30 1.6076
2011-12-31 1.5706
2012-03-31 1.5702
2012-06-30 1.5826
2012-09-30 1.5794
2012-12-31 1.6054
2013-03-31 1.5511
2013-06-30 1.5349
2013-09-30 1.5494
2013-12-31 1.6174
2014-03-31 1.654
2014-06-30 1.682
2014-09-30 1.6686
2014-12-31 1.5826
2015-03-31 1.5129
2015-06-30 1.533
2015-09-30 1.548
2015-12-31 1.5172
2016-03-31 1.4311
2016-06-30 1.4348
2016-09-30 1.3148
2016-12-31 1.2442
2017-03-31 1.2421
2017-06-30 1.2841
2017-09-30 1.3127
2017-12-31 1.3309
2018-03-31 1.397
2018-06-30 1.366
2018-09-30 1.3088
2018-12-31 1.2931
2019-03-31 1.3086
2019-06-30 1.2909
2019-09-30 1.2377
2019-12-31 1.2908
2020-03-31 1.2821
2020-06-30 1.2424
2020-09-30 1.2921
2020-12-31 1.3214
2021-03-31 1.3796
2021-06-30 1.3989