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Table 4.  Regression Coefficients for All Periods Regression for 1989 through 1992.

Year

1989

1990

1991

1992

Rsquare

0.75

0.83

0.83

0.79

Intercept

-22.5

-28

6.4

30.3

Period 12

59.7

-132.6

-74.6

-132.9

Period 14

-16.2

89.2

-80.5

56.6

Period 16

-87

-132

61.6

-16.6

Period 18

115.2

30.6

36.6

14.5

Period 20

-19

176.7

-60.7

31.6

Period 22

28.6

-44.4

58.7

5.1

Period 24

47.4

42.1

-1.8

-25.1

Period 26

-11

-90.1

51.1

19.3

Period 28

9.6

369.8

-95.8

25.1

Period 30

-8.1

-245.2

90.2

-8.1

Comments:  1.  Std. Dev. of Coefs Large.
2.  Size and Sign of Coef Varies Much by Year

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