How can I "rank" a column of numbers.

I do not want to SORT.
I have a column of scores (say b3:b15).
In column C I wan to put the rank of those scores (lowest to highest)
So the lowest number in Column B would have a Number 1 in Column C and so on.
How can I do this

B C
34 4
11 1
15 2
25 3

Thanks
duce