year	sears	USdispinc
1955	3.307	273.4
1956	3.556	291.3
1957	3.601	306.9
1958	3.721	317.1
1959	4.036	336.1
1960	4.134	349.4
1961	4.268	362.9
1962	4.578	383.9
1963	5.093	402.8
1964	5.716	437.0
1965	6.357	472.2
1966	6.769	510.4
1967	7.296	544.5
1968	8.178	588.1
1969	8.844	630.4
1970	9.251	685.9
1971	10.006	742.8
1972	11.200	801.3
1973	12.500	903.1
1974	13.101	983.6
1975	13.640	1076.7