How long have you continuously used a single cup?
1+ years
21(20.2%)
2+ years
19(18.3%)
3+ years
18(17.3%)
4+ years
13(12.5%)
5+ years
13(12.5%)
6+ years
9(8.7%)
7+ years
8(7.7%)
8+ years
1(1.0%)
9+ years
0(0.0%)
10+ years
2(1.9%)