Table:
census metropolitan area
percent change in crime severity index from 2016 to 2017
violations driving the change in crime severity index

canada
2
sexual assault (level 1), possession of stolen property, motor vehicle theft, homicide; offset by decrease in breaking and entering

st. john's
-15
decrease in breaking and entering

halifax
4
breaking and entering, sexual violations against children; sexual assault (level 1), robbery; offset by decrease in homicide

moncton
15
fraud, breaking and entering; offset by decrease in robbery

saint john
3
fraud, breaking and entering; offset by decrease in homicide

saguenay
-2
decreases in homicide, forcible confinement or kidnapping

quebec
8
attempted murder, homicide, fraud; offset by decrease in breaking and entering

sherbrooke
3
breaking and entering, sexual assault (level 1), child pornography, sexual assault (level 2); offset by decrease in sexual violations against children

trois-rivieres
10
sexual violations against children, homicide, theft of $5,000 or under, attempted murder; offset by decrease in forcible confinement or kidnapping

montreal
0
sexual assault (level 1), sexual violations against children, motor vehicle theft; offset by decrease in breaking and entering

gatineau
1
fraud, sexual violations against children, sexual assault (level 1); offset by decreases in breaking and entering and homicide

ottawa
0
decreases in homicide and breaking and entering; offset by increases in fraud and robbery

kingston
11
fraud, sexual assault (level 1), attempted murder; offset by decrease in breaking and entering

peterborough
-3
decreases in homicide, breaking and entering, theft of $5,000 or under, sexual violations against children; offset by increase in aggravated assault (level 3

toronto
3
theft of $5,000 or under, robbery, breaking and entering

hamilton
9
robbery, theft of $5,000 or under, motor vehicle theft

st. catharines-niagara
12
breaking and entering, trafficking, production or import/export of cannabis, fraud, homicide

kitchener-cambridge-waterloo
14
breaking and entering, fraud, sexual assault (level 1), robbery

brantford
-1
decreases in fraud, arson, breaking and entering; offset by increase in sexual assault (level 1

guelph
15
breaking and entering, fraud, sexual assault (level 1

london
3
motor vehicle theft, sexual assault (level 1), breaking and entering, theft of $5,000 or under; offset by a decrease in homicide

windsor
7
robbery, theft of $5,000 or under, fraud, attempted murder, breaking and entering

barrie
0
increase in homicide, administration of justice violations, robbery, and attempted murder; offset by decrease in fraud

greater sudbury
25
breaking and entering, child pornography, fraud, theft of $5,000 or under

thunder bay
1
increase in forcible confinement or kidnapping, trafficking, production or import/export of cocaine, aggravated assault (level 3), robbery; offset by decrease in breaking and entering

winnipeg
4
robbery, theft of $5,000 or under; partially offset by decrease in breaking and entering

regina
-11
decreases in robbery, breaking and entering, attempted murder

saskatoon
-1
decreases in homicide, theft of $5,000 or under, fraud, motor vehicle theft; offset by increases in robbery and breaking and entering

calgary
6
breaking and entering, robbery

edmonton
5
breaking and entering, administration of justice violations, possession of stolen property, fraud

kelowna
-2
decreases in child pornography, breaking and entering, robbery; offset by an increase in trafficking, production or import/export of heroin

abbotsford-mission
-1
decreases in breaking and entering, robbery, violent firearms offences; offset by an increase in homicide and sexual assault (level 3

vancouver
-6
decreases in breaking and entering, theft of $5,000 or under, child pornography

victoria
-3
decreases in breaking and entering, child pornography, robbery; offset by increase in homicide

Statement: the largest decreases in csi were reported in st. john's , regina and vancouver.
Question: list the top3 cmas reported the largest decreases in csi.
Answer: st. john's, regina, vancouver