These are the fiqures:
Run Run% Win% Rf
1 11.86 9.83 0.828
2 10.51 9.29 0.884
3 9.13 9.38 1.027
4 7.82 8.90 1.139
5 6.58 7.66 1.165
6 5.44 6.59 1.211
7 4.46 5.33 1.196
8 3.60 4.26 1.182
9 2.87 3.46 1.203
10 2.28 2.72 1.192
11 1.81 2.13 1.178
12 1.42 1.65 1.164
13 1.14 1.28 1.127
14 0.90 0.98 1.090

1,321,029 runs 129,124 races
The balance of the horses missing are made up of a great number which never spelled (84 plus days) and first starters which didn't make it to a spell.
They reach a plateau at 6 which is maintained to run 9 when a slow decline starts. Sorry if the fiqures are to close but you still should be able to read them and I don't know anything about spacing or bold texting except for the smilies!