1915

1967

2006

US Population

100,000,000

200,000,000

300,000,000

Median Age

24

30

36

Life Expectancy

55

71

78

New Home Cost

$3,200
($64,158)

$24,600
($149,147)

$290,600

Gallon of Milk Cost

$.36
($7.22)

$1.03
($6.24)

$3.00

First Class Stamp Cost

$.02
($.37)

$.05
($.28)

$.39

Gallon of Gas Cost

$.25
($5.01)

$.33
($2.00)

$2.66
(Sept. 14th)

Ave. Size of Household

4.5 people

3.3 people

2.6 people