Quarter	Thousands of Persons, Seasonally Adjusted
1970-01-01	3878.075
1970-04-01	3908.009
1970-07-01	3927.406
1970-10-01	3938.276
1971-01-01	3949.874
1971-04-01	3970.925
1971-07-01	3957.444
1971-10-01	3964.737
1972-01-01	3969.277
1972-04-01	3972.432
1972-07-01	3963.347
1972-10-01	3974.138
1973-01-01	3969.567
1973-04-01	3951.090
1973-07-01	3992.431
1973-10-01	3996.658
1974-01-01	4016.791
1974-04-01	4028.117
1974-07-01	4060.191
1974-10-01	4066.124
1975-01-01	4102.265
1975-04-01	4123.090
1975-07-01	4138.430
1975-10-01	4153.019
1976-01-01	4153.605
1976-04-01	4168.406
1976-07-01	4134.900
1976-10-01	4162.295
1977-01-01	4166.010
1977-04-01	4170.878
1977-07-01	4172.582
1977-10-01	4186.086
1978-01-01	4197.861
1978-04-01	4196.706
1978-07-01	4223.189
1978-10-01	4218.846
1979-01-01	4236.633
1979-04-01	4269.580
1979-07-01	4267.193
1979-10-01	4298.365
1980-01-01	4303.063
1980-04-01	4344.076
1980-07-01	4313.265
1980-10-01	4319.130
1981-01-01	4345.609
1981-04-01	4302.659
1981-07-01	4343.801
1981-10-01	4336.633
1982-01-01	4343.171
1982-04-01	4355.254
1982-07-01	4368.542
1982-10-01	4357.383
1983-01-01	4373.469
1983-04-01	4381.577
1983-07-01	4375.465
1983-10-01	4368.264
1984-01-01	4381.872
1984-04-01	4359.047
1984-07-01	4411.029
1984-10-01	4410.315
1985-01-01	4375.131
1985-04-01	4336.647
1985-07-01	4380.941
1985-10-01	4376.617
1986-01-01	4377.318
1986-04-01	4397.612
1986-07-01	4379.915
1986-10-01	4381.554
1987-01-01	4396.069
1987-04-01	4409.031
1987-07-01	4410.999
1987-10-01	4422.958
1988-01-01	4439.824
1988-04-01	4446.365
1988-07-01	4454.463
1988-10-01	4470.300
1989-01-01	4481.124
1989-04-01	4502.864
1989-07-01	4508.572
1989-10-01	4538.563
1990-01-01	4559.526
1990-04-01	4554.360
1990-07-01	4551.411
1990-10-01	4569.594
1991-01-01	4571.325
1991-04-01	4545.576
1991-07-01	4505.044
1991-10-01	4493.744
1992-01-01	4478.095
1992-04-01	4473.801
1992-07-01	4424.099
1992-10-01	4388.699
1993-01-01	4360.997
1993-04-01	4329.399
1993-07-01	4312.021
1993-10-01	4277.037
1994-01-01	4253.350
1994-04-01	4258.263
1994-07-01	4279.735
1994-10-01	4273.316
1995-01-01	4298.691
1995-04-01	4334.842
1995-07-01	4326.948
1995-10-01	4320.097
1996-01-01	4327.458
1996-04-01	4299.255
1996-07-01	4305.572
1996-10-01	4311.125
1997-01-01	4293.736
1997-04-01	4273.958
1997-07-01	4261.540
1997-10-01	4225.252
1998-01-01	4228.714
1998-04-01	4239.817
1998-07-01	4280.332
1998-10-01	4273.231
1999-01-01	4289.127
1999-04-01	4307.014
1999-07-01	4310.100
1999-10-01	4326.104
2000-01-01	4338.950
2000-04-01	4360.049
2000-07-01	4347.348
2000-10-01	4394.991
2001-01-01	4417.557
2001-04-01	4403.150
2001-07-01	4412.863
2001-10-01	4424.338
2002-01-01	4423.893
2002-04-01	4399.033
2002-07-01	4417.691
2002-10-01	4432.244
2003-01-01	4442.991
2003-04-01	4436.792
2003-07-01	4446.782
2003-10-01	4469.291
2004-01-01	4472.676
2004-04-01	4441.743
2004-07-01	4468.412
2004-10-01	4457.709
2005-01-01	4461.378
2005-04-01	4715.183
2005-07-01	4692.578
2005-10-01	4736.434
2006-01-01	4748.255
2006-04-01	4750.390
2006-07-01	4771.516
2006-10-01	4792.305
2007-01-01	4825.201
2007-04-01	4817.323
2007-07-01	4846.665
2007-10-01	4871.451
2008-01-01	4885.718
2008-04-01	4897.301
2008-07-01	4896.187
2008-10-01	4911.857
2009-01-01	4906.514
2009-04-01	4914.537
2009-07-01	4889.482
2009-10-01	4918.471
2010-01-01	4935.986
2010-04-01	4956.750
2010-07-01	4966.369
2010-10-01	4984.064
2011-01-01	5014.351
2011-04-01	5014.112
2011-07-01	5011.966
2011-10-01	5033.854
2012-01-01	5028.451