Value |
Category |
0 |
matches all 3 years |
1 |
2000 only |
2 |
2000 & 2004 only |
3 |
2004 & 2008 only |
4 |
2000 & 2008 only |
5 |
none of years match |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.