Bt2

19,700

21,800

497

8.6

19.3

17.3

66.7

Bt3

22,900

25,400

567

8.8

23.9

20.5

79.8

Bt4

20,500

25,400

718

11.6

23.6

20.3

79.5

Bt5

18,600

23,500

624

8.5

22.9

18.6

71.8

BC

20,600

24,000

482

7.2

24

18.8

81.7