| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| 1 | 14.4 | 12.8 | 2.5 | 17.2 | 17.3 | 24.8 | 31.4 | 36.6 | 26.8 | 23.1 | 20.9 | |
|---|
| 2 | 17.1 | 11.2 | 10.8 | 18.0 | 16.5 | 26.2 | 30.4 | 34.8 | 26.7 | 21.6 | 16.2 | |
|---|
| 3 | 13.7 | 8.7 | 8.4 | 17.4 | 21.9 | 29.8 | 31.3 | 34.9 | 24.8 | 24.7 | 23.1 | |
|---|
| 4 | 15.3 | 6.8 | 11.7 | 14.3 | 24.2 | 26.4 | 30.5 | 36.9 | 26.7 | 28.2 | 20.9 | |
|---|
| 5 | 14.4 | 9.4 | 13.3 | 18.2 | 26.4 | 26.2 | 29.5 | 35.9 | 28.2 | 26.2 | 21.8 | |
|---|
| 6 | 13.9 | 10.7 | 12.8 | 19.7 | 22.4 | 26.2 | 29.9 | 35.8 | 28.7 | 21.6 | 21.4 | |
|---|
| 7 | 18.3 | 11.8 | 14.8 | 22.7 | 26.6 | 28.1 | 31.6 | 34.8 | 27.2 | 23.1 | 15.0 | |
|---|
| 8 | 19.8 | 9.3 | 15.0 | 23.8 | 24.0 | 27.6 | 31.1 | 33.0 | 28.2 | 26.0 | 19.2 | |
|---|
| 9 | 15.9 | 12.3 | 16.1 | 15.0 | 23.3 | 25.3 | 31.9 | 33.4 | 30.1 | 27.0 | 20.6 | |
|---|
| 10 | 9.9 | 12.6 | 13.0 | 16.1 | 23.7 | 26.9 | 30.8 | 31.3 | 31.1 | 26.2 | 20.1 | |
|---|
| 11 | 14.1 | 11.8 | 13.8 | 13.5 | 23.8 | 28.8 | 29.1 | 30.8 | 31.6 | 24.0 | 19.4 | |
|---|
| 12 | 14.2 | 11.4 | 14.7 | 18.4 | 22.1 | 26.4 | 28.3 | 30.5 | 30.7 | 27.1 | 20.6 | |
|---|
| 13 | 13.8 | 11.4 | 16.6 | 19.5 | 22.4 | 25.0 | 31.0 | 30.1 | 27.3 | 26.1 | 19.8 | |
|---|
| 14 | 12.4 | 11.1 | 16.1 | 25.7 | 16.9 | 28.1 | 33.6 | 28.8 | 28.8 | 25.7 | 21.6 | |
|---|
| 15 | 10.8 | 9.8 | 13.4 | 22.3 | 17.9 | 29.0 | 32.2 | 31.7 | 28.8 | 25.9 | 20.5 | |
|---|
| 16 | 14.1 | 11.7 | 17.1 | 22.3 | 20.2 | 29.0 | 28.6 | 31.8 | 29.2 | 23.6 | 16.8 | |
|---|
| 17 | 16.0 | 10.6 | 14.2 | 23.7 | 22.0 | 30.4 | 29.6 | 31.4 | 29.6 | 24.5 | | |
|---|
| 18 | 12.4 | 13.5 | 12.3 | 26.3 | 25.3 | 30.3 | 30.8 | 32.7 | 28.7 | 26.7 | | |
|---|
| 19 | 15.2 | 11.9 | 12.7 | 26.9 | 26.8 | 32.4 | 31.4 | 34.9 | 30.9 | 27.3 | | |
|---|
| 20 | 12.7 | 11.2 | 14.9 | 29.2 | 27.9 | 33.9 | 30.4 | 36.0 | 31.8 | 25.4 | | |
|---|
| 21 | 18.4 | 9.3 | 10.5 | 26.8 | 27.5 | 31.1 | 29.7 | 36.1 | 30.7 | 24.3 | | |
|---|
| 22 | 10.5 | 10.9 | 13.4 | 23.7 | 22.9 | 30.0 | 29.4 | 36.3 | 28.8 | 21.1 | | |
|---|
| 23 | 15.7 | 10.8 | 13.2 | 23.0 | 24.9 | 29.0 | 31.1 | 32.8 | 28.6 | 23.5 | | |
|---|
| 24 | 15.9 | 17.4 | 14.7 | 25.6 | 23.5 | 28.2 | 32.2 | 31.7 | 29.8 | 23.3 | | |
|---|
| 25 | 12.8 | 10.6 | 15.6 | 23.1 | 26.2 | 28.0 | 31.8 | 28.5 | 24.4 | 20.6 | | |
|---|
| 26 | 14.0 | 2.4 | 16.2 | 23.2 | 30.9 | 28.9 | 32.3 | 29.0 | 23.7 | 20.2 | | |
|---|
| 27 | 14.8 | 4.6 | 16.7 | 26.9 | 29.6 | 29.1 | 32.3 | 27.9 | 26.6 | 20.8 | | |
|---|
| 28 | 17.3 | 5.6 | 15.1 | 27.1 | 27.3 | 27.8 | 31.0 | 32.3 | 28.4 | 20.2 | | |
|---|
| 29 | 15.3 | | 13.8 | 25.9 | 29.2 | 29.4 | 31.7 | 31.7 | 28.9 | 24.1 | | |
|---|
| 30 | 11.6 | | 16.7 | 19.2 | 28.5 | 31.2 | 35.6 | 29.8 | 25.7 | 17.1 | | |
|---|
| 31 | 11.1 | | 14.4 | | 25.8 | | 36.5 | 26.5 | | 16.3 | | |
|---|