大於33個月的有9.5％！>24個月的有16.8%！太可怕了。

3 - 6 months 55,749 16.9%
6 - 9 months 28,029 8.5%
9 - 12 months 20,825 6.3%
12 - 15 months 14,133 4.3%
15 - 18 months 13,931 4.2%
18 - 21 months 11,035 3.4%
21 - 24 months 12,398 3.8%
24 -27 months 11,765 3.6%
27 - 30 months 6,600 2.0%
30 - 33 months 5,732 1.7%
>33 months 31,144 9.5%


大於33個月的有9.5％！
大於24個月的有9.5+3.6+2+1.7％=16.8%!