Below is the results of a study done by Chitika to check what percentage of clicks each spot gets.

Some notes: (using round numbers)

#1 gets 2x the traffic as #2.

#1 gets 11x as much traffic as #10

#10 gets almost 2.5x the traffic #11 gets

#11 gets 2x the traffic #14 gets

Going from #14 to #10 will increase your traffic almost 5x.

If a phrase gets 100 clicks per day, at #9 and #10 expect less than 3 clicks per day.

Having 3 pages ranked #3 is about the same as having 1 page rank #1.

Rank Impressions Percentage
1 2,834,806 34.35%
2 1,399,502 16.96%
3 942,706 11.42%
4 638,106 7.73%
5 510,721 6.19%
6 416,887 5.05%
7 331,500 4.02%
8 286,118 3.47%
9 235,197 2.85%
10 223,320 2.71%
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11 91,978 1.11%
12 69,778 0.85%
13 57,952 0.70%
14 46,822 0.57%
15 39,635 0.48%
16 32,168 0.39%
17 26,933 0.33%
18 23,131 0.28%
19 22,027 0.27%
20 23,953 0.29%