Table:
canada
oil-producing provinces
central provinces
other provinces

percent

all occupational categories
2.7
4.2
2.4
2.5

managers and senior managers
2.4
3.6
2.2
2.2

professionals
3.4
3.7
3.4
2.9

technical personnel
4.0
6.4
3.6
3.0

trades workers
3.6
7.2
2.7
3.3

apprentices
2.7
3.0
2.4
3.0

sales and marketing personnel
1.9
3.8
1.8
1.4

administrative and office personnel
2.0
2.4
2.0
1.8

production or services workers
2.5
4.2
2.1
2.6

others
2.0
3.8
1.5
2.0

Statement: jobs requiring technical personnel and trades workers were especially evident in the oil-producing provinces, with job vacancy rates of 6.4% and 7.2% respectively; significantly higher than central provinces and other groups.
Question: which province need technical personnel and trades workers most?
Answer: oil-producing provinces