Table:
number
percentage points

devitalization factors

non-transmission of mother tongue
-7,075
-23.4

complete language transfers
-630
-2.1

total losses
-7,705
-25.5

mitigating factors

knowledge of mother tongue without using it at home
475
1.6

use of inuktut at home among inuit who do not report it as mother tongue
3,445
11.4

main use
525
1.7

secondary use
2,920
9.7

secondary speakers
450
1.5

total mitigating factors
4,370
14.5

mitigating factors

transmission of inuit mother tongue to non-inuit
105
0.3

use of inuktut at home among non-inuit who do not report it as mother tongue
225
0.7

secondary speakers
130
0.4

total mitigating factors
460
1.5

sum of mitigating factors
4,830
16.0

sum of devitalization factors and mitigating factors
-2,875
-9.5

Statement: these second-language speakers also contribute to the vitality of inuktut , since they can use this language outside the home.
Question: how many percentage points did these second-language speakers contribute to the vitality of inuktut, since they can use this language outside the home?
Answer: [1.5]