"i" have "i" chance of occuring Design a random number generator where the i th number has i% chance
  of occurring for all 0 &lt; i &lt; 14. 0 should have exactly 9% chance of
  occurring. The seed for the generator should be the system time.
  You cannot use a pre-defined function for random number generation.


Basically 1 has 1% chance of occurring, 2 has 2% chance and so on up to 13 having 13% chance of occurring. This is code-golf, so the shortest code wins.
CJam, 14 bytes

E,_T9t\]ze~es=


Test it here.

Explanation

E,   e# Push [0 1 2 ... 12 13].
_    e# Make a copy.
T9t\ e# Set the first element to 9. Swap with the original range.
]z   e# Wrap them in an array and transpose to get [[9 0] [1 1] [2 2] ... [13 13].
e~   e# Run-length decode to get `[0 0 0 0 0 0 0 0 0 1 2 2 3 3 3 ... 13 13 ... 13 13].
es=  e# Use the current timestamp as a cyclic index into this array.