Placing Percentages

For all you good, experienced players out there, what's your placing distribution? Mine is as follows:

1st: 15.3%
2nd: 11.8%
3rd: 13.3%
4th: 9.4%
5th: 13.7%
6th: 11.3%
7th: 7.8%
8th: 5.9%
9th: 5.9%
10th: 4.7%

Is this a healthy distribution? does the reletively low % of 4ths mean I'm playing too passively on the bubble and playing to cash rather than playing to win? What do you guys think?