A panel of 48 observations from 1970 to 1986
A data frame containing :
the state
the year
the region
public capital stock
highway and streets
water and sewer facilities
other public buildings and structures
private capital stock
gross state product
labor input measured by the employment in non--agricultural payrolls
state unemployment rate
total number of observations : 816
observation : regional
country : United States
BALT:01plm
BALT:13plm
BALT:PINN:95plm
MUNN:90plm