Imputation Number
0 = Original data

decade number
3 = 1940-50
4 = 1950-60
5 = 1960-70
6 = 1970-80
7 = 1980-90
8 = 1990-00

culture zones 11
1 = Reformed West
2 = New West
3 = Old West
4 = Returned West
5 = Orthodox East
6 = Orthodox East II
7 = Indic East
8 = Islamic East
9 = Sinic East
10 = Latin America
11 = Sub-Saharan Africa