Table:
initial tax filers
delayed tax filers

percent

income sources

business self-employment
7.2
13.4

commission
0.7
1.3

farming
1.9
1.0

fishing
0.2
0.2

professional
1.4
1.7

rental
5.4
4.5

2010 constant dollars

average conditional income sources

business self-employment
11,500
12,450

commission
18,150
17,200

farming
4,700
-2,150

fishing
20,400
17,600

professional
62,500
35,200

rental
1,900
-1,150

Statement: the shares of initial and delayed tax filers with fishing or professional income are approximately equal.
Question: what was the margin between initial and delayed tax filers for fishing income?
Answer: [0]