| Jan | Feb | March | April | May | June | July | Aug | Sept | Oct | Nov | Dec |
|---|
| 1 | 26.2 | 30.5 | | | | | | | | | | |
|---|
| 2 | 30.4 | 22.4 | | | | | | | | | | |
|---|
| 3 | 33.7 | 24.2 | | | | | | | | | | |
|---|
| 4 | 26.6 | 29.5 | | | | | | | | | | |
|---|
| 5 | 30.7 | 30.2 | | | | | | | | | | |
|---|
| 6 | 33.7 | 22.5 | | | | | | | | | | |
|---|
| 7 | 30.1 | 22.1 | | | | | | | | | | |
|---|
| 8 | 27.9 | 21.5 | | | | | | | | | | |
|---|
| 9 | 30.0 | 27.0 | | | | | | | | | | |
|---|
| 10 | 30.5 | 23.7 | | | | | | | | | | |
|---|
| 11 | 31.9 | 24.2 | | | | | | | | | | |
|---|
| 12 | 22.9 | 30.8 | | | | | | | | | | |
|---|
| 13 | 30.2 | 27.6 | | | | | | | | | | |
|---|
| 14 | 22.0 | 34.9 | | | | | | | | | | |
|---|
| 15 | 24.2 | 26.7 | | | | | | | | | | |
|---|
| 16 | 22.1 | 24.3 | | | | | | | | | | |
|---|
| 17 | 26.0 | 27.2 | | | | | | | | | | |
|---|
| 18 | 25.8 | 26.5 | | | | | | | | | | |
|---|
| 19 | 32.4 | 30.5 | | | | | | | | | | |
|---|
| 20 | 28.8 | 31.0 | | | | | | | | | | |
|---|
| 21 | 27.0 | 30.6 | | | | | | | | | | |
|---|
| 22 | 26.5 | 26.3 | | | | | | | | | | |
|---|
| 23 | 33.7 | | | | | | | | | | | |
|---|
| 24 | 21.9 | | | | | | | | | | | |
|---|
| 25 | 25.0 | | | | | | | | | | | |
|---|
| 26 | 28.5 | | | | | | | | | | | |
|---|
| 27 | 31.9 | | | | | | | | | | | |
|---|
| 28 | 33.0 | | | | | | | | | | | |
|---|
| 29 | 27.3 | | | | | | | | | | | |
|---|
| 30 | 33.3 | | | | | | | | | | | |
|---|
| 31 | 33.6 | | | | | | | | | | | |
|---|
|
