Microsoft Operating Systems (e.g. Windows 2003)
Years experience on platform	Number	Average
1	6	R19 764
2	11	R22 393
3	13	R15 810
4	17	R14 145
5	41	R21 118
6	33	R17 173
7	26	R19 258
8	33	R20 727
9	16	R19 531
10	69	R25 616
11	12	R23 462
12	25	R25 378
13	16	R19 650
14	9	R31 066
15	29	R31 234
16	10	R33 494
17	6	R23 967
18	6	R22 814
19	1	R30 000
20	4	R31 000
20<	17	R23 197