@ @
500 ` 1,000 ~
@
1,000 ` 2,000 ~
@
2,001 ` 2,400 ~
@
2,401 ` 3,000 ~
@
3,001 ` 3,300 ~
@
3,301 ` 3,800 ~
@
3,801 ` 4,000 ~
@
4,001 ` 5,000 ~
@
5,001 ` 10,000~
@
10,001 ` 20,000~