Table:
province and territory
total youth crime severity index
youth violent crime severity index
youth non-violent crime severity index

index
percent change 2015 to 2016
percent change 2006 to 2016
index
percent change 2015 to 2016
index
percent change 2015 to 2016

newfoundland and labrador
59.3
-2
-43
47.9
-6
67.0
0

prince edward island
30.7
-12
-70
25.2
-18
34.5
-9

nova scotia
77.5
8
-41
84.4
25
72.3
-2

new brunswick
55.7
-3
-38
49.0
-5
60.1
-2

quebec
56.4
4
-11
75.0
16
43.0
-8

ontario
52.7
4
-46
69.1
14
40.9
-5

manitoba
113.1
-5
-38
127.5
0
102.3
-10

saskatchewan
170.2
-9
-36
160.0
-8
176.7
-10

alberta
57.0
-15
-48
61.1
-16
53.8
-13

british columbia
35.7
-9
-56
37.2
-8
34.5
-10

yukon
191.9
-28
-30
184.1
15
196.5
-42

northwest territories
266.8
-10
-48
149.0
-28
349.0
-3

nunavut
296.3
-10
-26
191.0
-17
369.5
-8

canada
60.1
-2
-40
70.9
5
52.2
-8

Statement: one of the largest declines in youth csi were reported in alberta.
Question: comparing to 2015, how many percentage point of youth csi has declined in alberta in 2016?
Answer: [15]