Quarterly
1979-03-31 2.0594
1979-06-30 2.1526
1979-09-30 2.195
1979-12-31 2.2129
1980-03-31 2.1716
1980-06-30 2.3156
1980-09-30 2.3781
1980-12-31 2.412
1981-03-31 2.2554
1981-06-30 1.9647
1981-09-30 1.8151
1981-12-31 1.9038
1982-03-31 1.7925
1982-06-30 1.7557
1982-09-30 1.6995
1982-12-31 1.6135
1983-03-31 1.4785
1983-06-30 1.535
1983-09-30 1.4952
1983-12-31 1.4546
1984-03-31 1.4481
1984-06-30 1.3657
1984-09-30 1.241
1984-12-31 1.1545
1985-03-31 1.2177
1985-06-30 1.2971
1985-09-30 1.3956
1985-12-31 1.4326
1986-03-31 1.4641
1986-06-30 1.5222
1986-09-30 1.4308
1986-12-31 1.4668
1987-03-31 1.5913
1987-06-30 1.6047
1987-09-30 1.621
1987-12-31 1.8806
1988-03-31 1.8771
1988-06-30 1.697
1988-09-30 1.6725
1988-12-31 1.7919
1989-03-31 1.6748
1989-06-30 1.5321
1989-09-30 1.5981
1989-12-31 1.5871
1990-03-31 1.6195
1990-06-30 1.7165
1990-09-30 1.8409
1990-12-31 1.9006
1991-03-31 1.7133
1991-06-30 1.6015
1991-09-30 1.7306
1991-12-31 1.8367
1992-03-31 1.7078
1992-06-30 1.8741
1992-09-30 1.7514
1992-12-31 1.5017
1993-03-31 1.4963
1993-06-30 1.4904
1993-09-30 1.4884
1993-12-31 1.471
1994-03-31 1.4793
1994-06-30 1.5419
1994-09-30 1.5758
1994-12-31 1.5641
1995-03-31 1.6267
1995-06-30 1.5876
1995-09-30 1.5797
1995-12-31 1.5472
1996-03-31 1.5241
1996-06-30 1.5531
1996-09-30 1.563
1996-12-31 1.7082
1997-03-31 1.6281
1997-06-30 1.6591
1997-09-30 1.6094
1997-12-31 1.638
1998-03-31 1.6672
1998-06-30 1.6588
1998-09-30 1.6914
1998-12-31 1.6598
1999-03-31 1.6129
1999-06-30 1.5781
1999-09-30 1.6475
1999-12-31 1.6123
2000-03-31 1.5959
2000-06-30 1.5167
2000-09-30 1.4809
2000-12-31 1.4971
2001-03-31 1.4199
2001-06-30 1.4019
2001-09-30 1.463
2001-12-31 1.448
2002-03-31 1.4165
2002-06-30 1.5173
2002-09-30 1.5643
2002-12-31 1.5995
2003-03-31 1.5715
2003-06-30 1.6401
2003-09-30 1.6507
2003-12-31 1.7778
2004-03-31 1.8233
2004-06-30 1.7991
2004-09-30 1.7967
2004-12-31 1.9094
2005-03-31 1.8819
2005-06-30 1.7876
2005-09-30 1.7668
2005-12-31 1.7166
2006-03-31 1.7365
2006-06-30 1.8533
2006-09-30 1.87
2006-12-31 1.9576
2007-03-31 1.9605
2007-06-30 2.0037
2007-09-30 2.0333
2007-12-31 1.986
2008-03-31 1.9733
2008-06-30 1.9763
2008-09-30 1.7871
2008-12-31 1.4353
2009-03-31 1.4336
2009-06-30 1.6466
2009-09-30 1.5989
2009-12-31 1.6139
2010-03-31 1.5159
2010-06-30 1.4962
2010-09-30 1.5745
2010-12-31 1.5644
2011-03-31 1.601
2011-06-30 1.6038
2011-09-30 1.5566
2011-12-31 1.5448
2012-03-31 1.5972
2012-06-30 1.5682
2012-09-30 1.6145
2012-12-31 1.6164
2013-03-31 1.5174
2013-06-30 1.5158
2013-09-30 1.6184
2013-12-31 1.6518
2014-03-31 1.6662
2014-06-30 1.7084
2014-09-30 1.6199
2014-12-31 1.5597
2015-03-31 1.4838
2015-06-30 1.5719
2015-09-30 1.5143
2015-12-31 1.4821
2016-03-31 1.4383
2016-06-30 1.3439
2016-09-30 1.3018
2016-12-31 1.2332
2017-03-31 1.2535
2017-06-30 1.3027
2017-09-30 1.3455
2017-12-31 1.3551
2018-03-31 1.4088
2018-06-30 1.3257
2018-09-30 1.3102
2018-12-31 1.2826
2019-03-31 1.3089
2019-06-30 1.2779
2019-09-30 1.2368
2019-12-31 1.3243