How much advertisers have bought 100 pixels blocks?

While playing with database data I've created the following table:
Here you can see how much adverts have bought what pixels blocks.
For example, there were sold 261 100-pixels-blocks
Also please notice that I've excluded adverts with removed ads from this table.

Amount	Pixel block
261	100
38	400
37	200
21	300
9	600
8	900
8	500
7	800
4	1600
4	1200
4	1000
3	2000
2	4800
2	2100
2	1400
1	10000
1	4200
1	4000
1	3600
1	1800
1	700

Interesting, isn't it? :)