196904  183.33
 197001  170.42
 197002  181.31
 197003  176.71
 197004  180.37
 197101  177.55
 197102  191.36
 197103  185.65
 197104  196.50
 197201  197.17
 197202  213.24
 197203  210.57
 197204  228.55
 197301  232.53
 197302  256.34
 197303  253.17
 197304  236.55
 197401  242.04
 197402  269.39
 197403  272.10
 197404  277.03
 197501  247.13
 197502  265.77
 197503  270.97
 197504  281.34
 197601  284.19
 197602  307.60
 197603  301.61
 197604  309.83
 197701  311.51
 197702  338.60
 197703  331.71
 197704  346.24
 197801  340.33
 197802  377.46
 197803  376.86
 197804  401.78
 197901  406.57
 197902  436.42
 197903  437.55
 197904  461.22
 198001  465.68
 198002  466.30
 198003  464.22
 198004  516.64
 198101  520.81
 198102  549.58
 198103  539.93
 198104  534.37
 198201  502.90
 198202  521.91
 198203  507.95
 198204  506.58
 198301  490.84
 198302  527.08
 198303  534.71
 198304  561.63
 198401  566.09
 198402  597.85
 198403  577.09
 198404  594.02
 198501  565.35
 198502  594.08
 198503  578.02
 198504  593.94
 198601  543.99
 198602  566.16
 198603  546.33
 198604  564.46
 198701  556.77
 198702  596.09
 198703  597.67
 198704  627.68
 198801  614.18
 198802  655.51
 198803  647.61
 198804  681.74
 198901  664.52
 198902  706.47
 198903  681.26
 198904  690.34
 199001  721.40
 199002  781.91
 199003  792.14
 199004  821.29
 199101  752.15
 199102  796.78
 199103  797.72
 199104  808.43
 199201  779.58
 199202  833.62
 199203  829.88
 199204  847.14
 DATE    SALES
 n=93, Quarterly Sales of All U.S. Manufacturers with intervention in
 Quarter 1 of 1990.