Quarter	Units, Seasonally Adjusted
1979-01-01	48473.1783136667
1979-04-01	53192.4974530000
1979-07-01	43332.7362953333
1979-10-01	44681.6116712000
1980-01-01	41694.0495593333
1980-04-01	36828.7323110000
1980-07-01	36931.6844800000
1980-10-01	34983.1435591000
1981-01-01	32909.6468912667
1981-04-01	32598.0148093333
1981-07-01	33403.1007423333
1981-10-01	31245.4582723333
1982-01-01	28176.4368110333
1982-04-01	35218.3846403333
1982-07-01	34830.0935113333
1982-10-01	37604.1805003333
1983-01-01	36780.0220732333
1983-04-01	39635.4663023333
1983-07-01	38824.2028020000
1983-10-01	38045.6569730000
1984-01-01	40435.2254567333
1984-04-01	37828.0647063333
1984-07-01	36497.6488493333
1984-10-01	39493.5891596667
1985-01-01	39579.0613810000
1985-04-01	40649.5173180000
1985-07-01	42192.4715543333
1985-10-01	42804.8673193333
1986-01-01	45588.7435340000
1986-04-01	49140.2516886667
1986-07-01	48328.6045910000
1986-10-01	44414.5931783333
1987-01-01	48505.6661220000
1987-04-01	48538.1679793333
1987-07-01	44675.1478540000
1987-10-01	43650.6106940000
1988-01-01	43601.1560234333
1988-04-01	38108.2945680000
1988-07-01	39756.3082556667
1988-10-01	38585.8384156667
1989-01-01	42510.3277845333
1989-04-01	40322.1380496667
1989-07-01	40809.2676533333
1989-10-01	40884.5599613333
1990-01-01	44020.3156822333
1990-04-01	41371.2984653333
1990-07-01	40857.5632486667
1990-10-01	40580.5215800000
1991-01-01	41344.3923614333
1991-04-01	41091.0238890000
1991-07-01	40445.5858150000
1991-10-01	40222.3099653333
1992-01-01	42617.9114660000
1992-04-01	35583.4198473333
1992-07-01	37940.8187883333
1992-10-01	47429.1056336667
1993-01-01	24544.7271142667
1993-04-01	32386.8459216667
1993-07-01	37378.9288376667
1993-10-01	35818.1626356667
1994-01-01	35053.4534785333
1994-04-01	35677.0086286667
1994-07-01	36331.2053616667
1994-10-01	37215.3166690000
1995-01-01	36865.1611594333
1995-04-01	37192.1678670000
1995-07-01	36470.5886200000
1995-10-01	38354.7033193333
1996-01-01	38166.8505311333
1996-04-01	40461.4963893333
1996-07-01	39868.2227833333
1996-10-01	39362.2748317333
1997-01-01	39863.7599566333
1997-04-01	38865.0734400000
1997-07-01	40148.6226416667
1997-10-01	40909.2611201667
1998-01-01	42563.2066124667
1998-04-01	43935.8497996667
1998-07-01	47758.5450556667
1998-10-01	46702.3466070000
1999-01-01	55049.2758685000
1999-04-01	53281.7438836667
1999-07-01	50710.2590723333
1999-10-01	44223.8282286667
2000-01-01	56622.4821938667
2000-04-01	49863.7712713333
2000-07-01	46112.4121553333
2000-10-01	46435.8416313333
2001-01-01	43646.1095293367
2001-04-01	44026.8847946667
2001-07-01	46005.0523260000
2001-10-01	42651.0942029667
2002-01-01	41674.8655381667
2002-04-01	40606.6584117000
2002-07-01	41664.0250634667
2002-10-01	46105.9346804000
2003-01-01	39123.9759370667
2003-04-01	42345.4691359000
2003-07-01	42210.0733464667
2003-10-01	39464.5416333000
2004-01-01	40273.0636163333
2004-04-01	40649.0313969000
2004-07-01	39352.2569774333
2004-10-01	40594.6785390000
2005-01-01	38570.7403744667
2005-04-01	37882.5331873667
2005-07-01	40090.3936560000
2005-10-01	37744.4477486667
2006-01-01	41198.6588926000
2006-04-01	39986.5937909667
2006-07-01	38733.6932903000
2006-10-01	41276.9668081000
2007-01-01	42140.1054931000
2007-04-01	42440.8422353333
2007-07-01	42371.6193185667
2007-10-01	41325.2313389667
2008-01-01	43787.3605806667
2008-04-01	43344.7627460000
2008-07-01	42105.0387215333
2008-10-01	37362.6020023333
2009-01-01	30774.5419737333
2009-04-01	30382.9623996667
2009-07-01	33863.8177318333
2009-10-01	33568.0107991000
2010-01-01	37987.0978054667
2010-04-01	40023.7790919667
2010-07-01	42894.9078250733
2010-10-01	39149.9588753667
2011-01-01	49972.1294661000
2011-04-01	47682.6016191667
2011-07-01	45067.6952611667
2011-10-01	41202.3198806000
2012-01-01	46071.8524230000
2012-04-01	53967.6580980000
2012-07-01	35719.3610820000
2012-10-01	30455.7823361667
2013-01-01	30622.2858596333
2013-04-01	31454.8115970000
2013-07-01	33335.5895816667
2013-10-01	42379.3485654000
2014-01-01	29106.8457828810
2014-04-01	30788.3208823333
2014-07-01	31155.5116237000
2014-10-01	37312.6452373333
2015-01-01	31100.9641170000
2015-04-01	31192.3123783333
2015-07-01	35444.8230268000
2015-10-01	51632.3174626667
2016-01-01	28451.9420076000
2016-04-01	32084.1821320000
2016-07-01	32338.7548606000
2016-10-01	35285.4576200000
2017-01-01	34843.4210317867
2017-04-01	35891.5691711667
2017-07-01	34146.8765063333
2017-10-01	33664.4352506667
2018-01-01	41016.8561767333
2018-04-01	39442.4319924667
2018-07-01	37469.9223605200