Numbers | % | |
Less than 1 year | 20 | 10.53 |
1 to 2 years | 40 | 21.05 |
2 to 4 years | 60 | 31.58 |
5 to 10 years | 40 | 21.05 |
Unspecified | 30 | 15.79 |
Total | 190 | 100 |