Quarter	Number of Permits
1960-01-01	23027.8172932013
1960-04-01	28197.9714474852
1960-07-01	25343.2833532867
1960-10-01	30513.4470231975
1961-01-01	28134.5402780321
1961-04-01	26738.9118156594
1961-07-01	25882.5053873998
1961-10-01	26865.7836701925
1962-01-01	23059.5328779279
1962-04-01	27278.1338497725
1962-07-01	24233.1332159608
1962-10-01	34541.7259398020
1963-01-01	23281.5705178946
1963-04-01	31052.6595416837
1963-07-01	30164.5375286976
1963-10-01	35302.9760982549
1964-01-01	31020.9439569571
1964-04-01	32860.6286680094
1964-07-01	34414.8540852688
1964-10-01	37903.9109677601
1965-01-01	32955.7849378160
1965-04-01	36952.3482696939
1965-07-01	33653.6039268159
1965-10-01	37555.0109888872
1966-01-01	29720.4717643911
1966-04-01	34510.0103550754
1966-07-01	31528.4408907168
1966-10-01	39077.5113057930
1967-01-01	34985.7917041085
1967-04-01	35017.5072888351
1967-07-01	30703.7595628108
1967-10-01	37523.2858885336
1968-01-01	32480.0035887830
1968-04-01	31052.6595416837
1968-07-01	31750.4785306835
1968-10-01	42471.4119184777
1969-01-01	35176.1042437218
1969-04-01	41519.8492204116
1969-07-01	35461.5730531416
1969-10-01	46214.2315412893
1970-01-01	30164.5375286976
1970-04-01	41519.8492204116
1970-07-01	36254.5387963211
1970-10-01	44850.3186636432
1971-01-01	35461.5730531416
1971-04-01	45326.1000126762
1971-07-01	36349.6950661277
1971-10-01	46753.4440597755
1972-01-01	40695.1678925055
1972-04-01	45357.8251130298
1972-07-01	36317.9794814012
1972-10-01	53699.8517556585
1973-01-01	41963.9149847181
1973-04-01	45072.3563036099
1973-07-01	34763.7540641418
1973-10-01	54556.2581839181
1974-01-01	43232.6652488063
1974-04-01	47292.6660938887
1974-07-01	41361.2586092762
1974-10-01	43010.6339525909
1975-01-01	41361.2586092762
1975-04-01	43930.4778940548
1975-07-01	37364.6952773983
1975-10-01	41392.9773658784
1976-01-01	38189.3829490556
1976-04-01	42249.3837941379
1976-07-01	35112.6635586417
1976-10-01	40695.1647206299
1977-01-01	40822.0397470387
1977-04-01	38570.0080282821
1977-07-01	35302.9760982549
1977-10-01	35810.4762038902
1978-01-01	32702.0380568740
1978-04-01	36032.5075001056
1978-07-01	33177.8194059071
1978-10-01	37713.6016000225
1979-01-01	35493.2886378681
1979-04-01	32892.3505964873
1979-07-01	31655.3190890013
1979-10-01	36476.5700925365
1980-01-01	33019.2256228961
1980-04-01	30513.4438513218
1980-07-01	29561.8811532557
1980-10-01	34383.1321567909
1981-01-01	32448.2880040564
1981-04-01	31655.3190890013
1981-07-01	29879.0687192777
1981-10-01	32733.7568134762
1982-01-01	26954.5993605544
1982-04-01	25568.4896970380
1982-07-01	24252.1612980465
1982-10-01	32150.1316919957
1983-01-01	25689.0209721264
1983-04-01	26710.3649347174
1983-07-01	24106.2550176763
1983-10-01	28889.4435132889
1984-01-01	21793.9576613755
1984-04-01	20610.8480401132
1984-07-01	21295.9731827209
1984-10-01	26161.6304454992
1985-01-01	22625.9406470514
1985-04-01	26131.1804391611
1985-07-01	29941.5546697841
1985-10-01	30179.1281567346
1986-01-01	20957.5340497754
1986-04-01	24626.7598135185
1986-07-01	28028.9136466711
1986-10-01	28320.4090198454
1987-01-01	24138.9253369766
1987-04-01	25743.2600459161
1987-07-01	23602.2439752673
1987-10-01	28460.2887364611
1988-01-01	26568.5820927055
1988-04-01	27349.8150678179
1988-07-01	25987.4944717531
1988-10-01	27653.9979436330
1989-01-01	26545.7445879519
1989-04-01	26877.2055944450
1989-07-01	25337.2599614079
1989-10-01	30953.3830053944
1990-01-01	24117.6737700531
1990-04-01	25016.9005197256
1990-07-01	25717.2506655023
1990-10-01	26937.7884195552
1991-01-01	25835.8788151946
1991-04-01	24975.0317610107
1991-07-01	23936.8768574205
1991-10-01	25791.1553683855
1992-01-01	25323.3037085029
1992-04-01	22026.4561472697
1992-07-01	19617.7337708982
1992-10-01	25822.5569374217
1993-01-01	22579.6312624121
1993-04-01	18714.3835828674
1993-07-01	20324.4276679953
1993-10-01	25157.4146114734
1994-01-01	26691.0164931900
1994-04-01	24496.3957238834
1994-07-01	23399.8783081452
1994-10-01	28669.3153424696
1995-01-01	27086.2322004535
1995-04-01	24447.2316511500
1995-07-01	23449.0423808786
1995-10-01	23178.4813870618
1996-01-01	25092.0739728729
1996-04-01	22193.2968069973
1996-07-01	21816.1607909971
1996-10-01	24389.8207017000
1997-01-01	21658.2013831181
1997-04-01	24317.1847490810
1997-07-01	20643.2011718475
1997-10-01	25689.9725348244
1998-01-01	23462.0470710855
1998-04-01	22723.6344173862
1998-07-01	23005.2969760138
1998-10-01	28248.4074423583
1999-01-01	28564.9606332484
1999-04-01	26361.1414245271
1999-07-01	28291.5449513373
1999-10-01	25077.4833448358
2000-01-01	30200.0000000000
2000-04-01	29366.6666666667
2000-07-01	25066.6666666667
2000-10-01	27966.6666666667
2001-01-01	28833.3333333333
2001-04-01	30000.0000000000
2001-07-01	24733.3333333333
2001-10-01	28833.3333333333
2002-01-01	29300.0000000000
2002-04-01	30066.6666666667
2002-07-01	25600.0000000000
2002-10-01	29133.3333333333
2003-01-01	30233.3333333333
2003-04-01	31433.3333333333
2003-07-01	27866.6666666667
2003-10-01	31766.6666666667
2004-01-01	33766.6666666667
2004-04-01	36366.6666666667
2004-07-01	31400.0000000000
2004-10-01	36600.0000000000
2005-01-01	38100.0000000000
2005-04-01	41533.3333333333
2005-07-01	35000.0000000000
2005-10-01	40300.0000000000
2006-01-01	40900.0000000000
2006-04-01	45466.6666666667
2006-07-01	36066.6666666667
2006-10-01	42200.0000000000
2007-01-01	40400.0000000000
2007-04-01	43866.6666666667
2007-07-01	36933.3333333333
2007-10-01	41900.0000000000
2008-01-01	37766.6666666667
2008-04-01	36600.0000000000
2008-07-01	29100.0000000000
2008-10-01	29533.3333333333
2009-01-01	25466.6666666667
2009-04-01	29333.3333333333
2009-07-01	27166.6666666667
2009-10-01	33433.3333333333
2010-01-01	28300.0000000000
2010-04-01	33533.3333333333
2010-07-01	32766.6666666667
2010-10-01	43300.0000000000
2011-01-01	33066.6666666667
2011-04-01	34000.0000000000
2011-07-01	30666.6666666667
2011-10-01	45866.6666666667
2012-01-01	32500.0000000000
2012-04-01	28800.0000000000
2012-07-01	26266.6666666667
2012-10-01	40033.3333333333
2013-01-01	31000.0000000000
2013-04-01	30433.3333333333
2013-07-01	25400.0000000000
2013-10-01	32700.0000000000
2014-01-01	26633.3333333333
2014-04-01	28100.0000000000
2014-07-01	24600.0000000000
2014-10-01	32100.0000000000
2015-01-01	25433.3333333333
2015-04-01	27100.0000000000
2015-07-01	25166.6666666667
2015-10-01	34300.0000000000
2016-01-01	26933.3333333333
2016-04-01	31200.0000000000
2016-07-01	26733.3333333333
2016-10-01	38266.6666666667
2017-01-01	33600.0000000000
2017-04-01	35000.0000000000
2017-07-01	30800.0000000000
2017-10-01	43500.0000000000
2018-01-01	33033.3333333333
2018-04-01	35000.0000000000
2018-07-01	28366.6666666667