|
39
Figure 7: Wages and Urbanized differences
Great Plains relative to the Great Lakes
(
urban + rural = 100% )
(20)
(15)
(10)
(5)
0
5
1920
1930
1940
1950
1960
1970
1980
1990
2000
Wa
ge Diffe
renc
es
(%
)
(60)
(48)
(36)
(24)
(12)
0
ur
ban-p
r
opo
rtion
(pi)
diffe
ren
ces
(%
)
Wage Difference
Urbanization Difference
Figure 8:
Transportation
Cost Gradient
Differences
Great Plains
less
Great Lakes
0
25
50
75
100
125
150
175
200
1930
1940
1950
1960
1970
1980
1990
2000
% d
i
ffer
e
nc
e
25% mkt share
difference
50% mkt share
difference
75% mkt share
difference
95% mkt share
difference
August
2005
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