Quarterly
1979-03-31 2.063
1979-06-30 2.1647
1979-09-30 2.2003
1979-12-31 2.2206
1980-03-31 2.1686
1980-06-30 2.3393
1980-09-30 2.3826
1980-12-31 2.401
1981-03-31 2.2468
1981-06-30 1.9494
1981-09-30 1.8116
1981-12-31 1.9081
1982-03-31 1.7866
1982-06-30 1.7469
1982-09-30 1.6954
1982-12-31 1.6161
1983-03-31 1.4803
1983-06-30 1.5348
1983-09-30 1.4949
1983-12-31 1.4528
1984-03-31 1.4436
1984-06-30 1.3598
1984-09-30 1.2392
1984-12-31 1.1568
1985-03-31 1.2251
1985-06-30 1.3065
1985-09-30 1.4024
1985-12-31 1.4413
1986-03-31 1.4728
1986-06-30 1.5293
1986-09-30 1.4421
1986-12-31 1.4783
1987-03-31 1.5993
1987-06-30 1.6097
1987-09-30 1.6258
1987-12-31 1.8848
1988-03-31 1.8821
1988-06-30 1.7032
1988-09-30 1.6811
1988-12-31 1.8021
1989-03-31 1.6818
1989-06-30 1.5439
1989-09-30 1.6118
1989-12-31 1.603
1990-03-31 1.6368
1990-06-30 1.7343
1990-09-30 1.86
1990-12-31 1.9185
1991-03-31 1.7294
1991-06-30 1.614
1991-09-30 1.7425
1991-12-31 1.8571
1992-03-31 1.7252
1992-06-30 1.8928
1992-09-30 1.7679
1992-12-31 1.5105
1993-03-31 1.5025
1993-06-30 1.4969
1993-09-30 1.4946
1993-12-31 1.4752
1994-03-31 1.4826
1994-06-30 1.5426
1994-09-30 1.5768
1994-12-31 1.5643
1995-03-31 1.6278
1995-06-30 1.59
1995-09-30 1.5815
1995-12-31 1.5494
1996-03-31 1.5255
1996-06-30 1.5533
1996-09-30 1.5634
1996-12-31 1.711
1997-03-31 1.6297
1997-06-30 1.6621
1997-09-30 1.6132
1997-12-31 1.6428
1998-03-31 1.6718
1998-06-30 1.6645
1998-09-30 1.6969
1998-12-31 1.6623
1999-03-31 1.6133
1999-06-30 1.5771
1999-09-30 1.647
1999-12-31 1.6125
2000-03-31 1.5955
2000-06-30 1.5151
2000-09-30 1.479
2000-12-31 1.496
2001-03-31 1.4212
2001-06-30 1.4051
2001-09-30 1.4675
2001-12-31 1.4528
2002-03-31 1.4215
2002-06-30 1.5231
2002-09-30 1.5697
2002-12-31 1.6061
2003-03-31 1.5776
2003-06-30 1.6466
2003-09-30 1.6577
2003-12-31 1.7862
2004-03-31 1.833
2004-06-30 1.8088
2004-09-30 1.805
2004-12-31 1.9158
2005-03-31 1.8874
2005-06-30 1.7904
2005-09-30 1.7678
2005-12-31 1.7164
2006-03-31 1.735
2006-06-30 1.8507
2006-09-30 1.869
2006-12-31 1.9574
2007-03-31 1.9612
2007-06-30 2.0057
2007-09-30 2.0361
2007-12-31 1.9892
2008-03-31 1.9832
2008-06-30 1.9853
2008-09-30 1.7869
2008-12-31 1.4364
2009-03-31 1.4332
2009-06-30 1.6468
2009-09-30 1.5991
2009-12-31 1.6146
2010-03-31 1.5165
2010-06-30 1.4962
2010-09-30 1.5752
2010-12-31 1.5652
2011-03-31 1.6025
2011-06-30 1.605
2011-09-30 1.5575
2011-12-31 1.5457
2012-03-31 1.5978
2012-06-30 1.5685
2012-09-30 1.6148
2012-12-31 1.6167
2013-03-31 1.5179
2013-06-30 1.5164
2013-09-30 1.619
2013-12-31 1.6525
2014-03-31 1.667
2014-06-30 1.7093
2014-09-30 1.6208
2014-12-31 1.5605
2015-03-31 1.4844
2015-06-30 1.5726
2015-09-30 1.5145
2015-12-31 1.4821
2016-03-31 1.438
2016-06-30 1.3432
2016-09-30 1.3
2016-12-31 1.2315
2017-03-31 1.2516
2017-06-30 1.3004
2017-09-30 1.343
2017-12-31 1.3524
2018-03-31 1.4051
2018-06-30 1.3222
2018-09-30 1.3059
2018-12-31 1.279
2019-03-31 1.305
2019-06-30 1.2748
2019-09-30 1.2337
2019-12-31 1.3222