Quarter	Units, Seasonally Adjusted
1961-01-01	2747.0323686510997
1961-04-01	3006.2911347691900
1961-07-01	3387.6780571748100
1961-10-01	3306.6422927718700
1962-01-01	3363.7827523607400
1962-04-01	3605.2651981295400
1962-07-01	3575.3708068240400
1962-10-01	3658.1933467963800
1963-01-01	3663.9485883898600
1963-04-01	3886.4030385933100
1963-07-01	4859.0757941155410
1963-10-01	6591.0842461682900
1964-01-01	4548.8412179290400
1964-04-01	5627.9772552558000
1964-07-01	5895.9269027437200
1964-10-01	5566.5701475136000
1965-01-01	5179.6334281913100
1965-04-01	5961.3313788983400
1965-07-01	5644.5046716850600
1965-10-01	5609.1124434825800
1966-01-01	5569.7014900960800
1966-04-01	5328.1627647039300
1966-07-01	5272.3345598153500
1966-10-01	5125.8148491708200
1967-01-01	5275.0548473049700
1967-04-01	5407.2153345032300
1967-07-01	4143.8169403060500
1967-10-01	4177.5698207671600
1968-01-01	4190.9181190399900
1968-04-01	3824.6114040600000
1968-07-01	4143.5791745273200
1968-10-01	4101.7850222452210
1969-01-01	4579.9379922618300
1969-04-01	4520.6622918245900
1969-07-01	4868.8640848129200
1969-10-01	4812.2269674647105
1970-01-01	4844.9454415559290
1970-04-01	5947.5240854004305
1970-07-01	6294.1919239048690
1970-10-01	6208.9876545453100
1971-01-01	5478.0182359989090
1971-04-01	6044.4237157839000
1971-07-01	6172.6464472071590
1971-10-01	7039.3913484523400
1972-01-01	7428.4830447616205
1972-04-01	6949.3876091112010
1972-07-01	7541.5797840271910
1972-10-01	8285.2220578547400
1973-01-01	9347.9841215783600
1973-04-01	8023.9609347391790
1973-07-01	8134.5459992816800
1973-10-01	8908.0350943557700
1974-01-01	8648.8212369112990
1974-04-01	9622.0545890515100
1974-07-01	8275.2068158167000
1974-10-01	6634.1913518934800
1975-01-01	6483.5950611377690
1975-04-01	6521.0451304628605
1975-07-01	8423.5868154526000
1975-10-01	6457.3907315843500
1976-01-01	5845.2320022235200
1976-04-01	5493.0927703838200
1976-07-01	5390.8168334829700
1976-10-01	7900.7936000525010
1977-01-01	5866.2929034302810
1977-04-01	4999.0473392662310
1977-07-01	5117.4042395765500
1977-10-01	4852.7156972269000
1978-01-01	4797.7075564672705
1978-04-01	5653.7453873402600
1978-07-01	6046.8182205778390
1978-10-01	5854.5757012985800
1979-01-01	5712.1074188316200
1979-04-01	5662.2989013181900
1979-07-01	5774.4458717296200
1979-10-01	6492.0880530855100
1980-01-01	6206.6825953162400
1980-04-01	6381.2262371539000
1980-07-01	6752.7427140735100
1980-10-01	6801.4545377599600
1981-01-01	6990.7042618869800
1981-04-01	7907.2154874786700
1981-07-01	7737.3349249781495
1981-10-01	7892.7674143298600
1982-01-01	7993.8470299933710
1982-04-01	8331.9337883266490
1982-07-01	6256.2461085552695
1982-10-01	5917.0990713842400
1983-01-01	7268.8335348148000
1983-04-01	5525.9124318038700
1983-07-01	5601.7906071856100
1983-10-01	6919.4628033983600
1984-01-01	8089.3763572053795
1984-04-01	7514.3045558221800
1984-07-01	9274.4192141011900
1984-10-01	7685.5374961042410
1985-01-01	6314.6599158267000
1985-04-01	7586.4126953755900
1985-07-01	7163.8796382756800
1985-10-01	6982.5590718371395
1986-01-01	7039.0921466822090
1986-04-01	6175.4857277841900
1986-07-01	7541.6049290363000
1986-10-01	5765.8091831209795
1987-01-01	6786.1883051313400
1987-04-01	7502.0793676871400
1987-07-01	8107.5662498017790
1987-10-01	7380.7644098582605
1988-01-01	6828.4324431840800
1988-04-01	6238.3944526905110
1988-07-01	7289.5500696150400
1988-10-01	9449.2773148362300
1989-01-01	10749.2503903985000
1989-04-01	12736.0136771402000
1989-07-01	10001.8709160213000
1989-10-01	11616.9444698970980
1990-01-01	11757.6121479190990
1990-04-01	12582.3840730223000
1990-07-01	12946.0088940538000
1990-10-01	16098.5386692998980
1991-01-01	8010.3974654594600
1991-04-01	8488.9242779624100
1991-07-01	9313.8538574982500
1991-10-01	8403.6063022470200
1992-01-01	7783.6162734279710
1992-04-01	7352.5194295207000
1992-07-01	7562.4611278633600
1992-10-01	7953.0711831527910
1993-01-01	7992.9675791510400
1993-04-01	7640.6573828629900
1993-07-01	8023.2923461563405
1993-10-01	8837.2278766167710
1994-01-01	10184.8205159766000
1994-04-01	9601.5746907685200
1994-07-01	10548.3970223454000
1994-10-01	10851.9398255140000
1995-01-01	11340.2274846001000
1995-04-01	11790.9352439927000
1995-07-01	12225.5092122761000
1995-10-01	13563.8960806605010
1996-01-01	13871.3696271223000
1996-04-01	14881.9549103823000
1996-07-01	15071.9168105174010
1996-10-01	15012.8053833961000
1997-01-01	14410.1861011520000
1997-04-01	13850.3199664567000
1997-07-01	12208.3208252901990
1997-10-01	11365.2477079095990
1998-01-01	10963.2034468547000
1998-04-01	11161.7773338451990
1998-07-01	13905.2091685196000
1998-10-01	15114.5215040020000
1999-01-01	15215.6701497240000
1999-04-01	15968.9059805303000
1999-07-01	15837.1463910799000
1999-10-01	15969.1403497843000
2000-01-01	15780.6822379846000
2000-04-01	14714.3196495228000
2000-07-01	14092.8291483914000
2000-10-01	13596.6982759435000
2001-01-01	14061.4797543307000
2001-04-01	15516.8611596052010
2001-07-01	15824.1081971024000
2001-10-01	16813.8515448581000
2002-01-01	17428.5438374509980
2002-04-01	15923.6807716980000
2002-07-01	16427.1556672970000
2002-10-01	17131.0569400689000
2003-01-01	18043.7976570165000
2003-04-01	18910.4905101369000
2003-07-01	19408.3282182906000
2003-10-01	19310.1319238816980
2004-01-01	19293.1753111856000
2004-04-01	19510.7524976188000
2004-07-01	18648.2350802771000
2004-10-01	18691.7923541171000
2005-01-01	18932.9865150221000
2005-04-01	19463.0406480795970
2005-07-01	19543.6948379410000
2005-10-01	18969.8665390796000
2006-01-01	17918.4191136352000
2006-04-01	16892.3490898834000
2006-07-01	16009.7069989946000
2006-10-01	16037.4451096985000
2007-01-01	16089.0288321300010
2007-04-01	16535.7967912703000
2007-07-01	16961.6998726572000
2007-10-01	16214.2822157506000
2008-01-01	15887.6253573901000
2008-04-01	14255.4023967232990
2008-07-01	12637.8794130360000
2008-10-01	11950.5788650673990
2009-01-01	9651.8925406973010
2009-04-01	9483.1040343260900
2009-07-01	10511.6910525300000
2009-10-01	11284.6788479911010
2010-01-01	12137.9966850188000
2010-04-01	12849.3479751108000
2010-07-01	12462.5545914671000
2010-10-01	12722.7349828920000
2011-01-01	12478.8181641444990
2011-04-01	11778.1430448247010
2011-07-01	11820.9364882683000
2011-10-01	12315.3763921951000
2012-01-01	12680.0838999164000
2012-04-01	12926.4658120016010
2012-07-01	12728.8253648611000
2012-10-01	13471.3418054779000
2013-01-01	14154.0855863218000
2013-04-01	14760.1023766673000
2013-07-01	15346.9120420714000
2013-10-01	16144.5147836206000
2014-01-01	17195.6703745966000
2014-04-01	18220.2884503759000
2014-07-01	18715.7228030204020
2014-10-01	19303.8491399532000
2015-01-01	19542.6654580066000
2015-04-01	19979.2971573779000
2015-07-01	20187.0752499078000
2015-10-01	19752.9988055879000
2016-01-01	20230.8548945954000
2016-04-01	20392.8884406395000
2016-07-01	21316.1375168728000
2016-10-01	22250.8901963516000
2017-01-01	22051.7421424203000
2017-04-01	22689.4792305198030
2017-07-01	22832.3389694095000
2017-10-01	23970.0843858185000
2018-01-01	21666.9215536010000
2018-04-01	21252.4152211588000
2018-07-01	21579.7660685643000