| Jan | Feb | March | April | May | June | July | Aug | Sept | Oct | Nov | Dec |
|---|
| 1 | 13.5 | 13.1 | 11.4 | 9.4 | 7.3 | 8.9 | | | | | | |
|---|
| 2 | 14.1 | 16.4 | 7.3 | 7.8 | 4.9 | 12.1 | | | | | | |
|---|
| 3 | 14.3 | 15.5 | 5.9 | 7.4 | 4.3 | 8.9 | | | | | | |
|---|
| 4 | 12.2 | 13.0 | 8.2 | 9.3 | 3.6 | 7.3 | | | | | | |
|---|
| 5 | 9.5 | 12.2 | 8.6 | 11.0 | 3.9 | 10.9 | | | | | | |
|---|
| 6 | 13.2 | 11.3 | 10.0 | 12.9 | 8.3 | 8.3 | | | | | | |
|---|
| 7 | 15.8 | 12.7 | 14.2 | 12.8 | 8.6 | 5.7 | | | | | | |
|---|
| 8 | 15.2 | 14.5 | 12.2 | 13.6 | 11.4 | 4.2 | | | | | | |
|---|
| 9 | 14.3 | 16.3 | 9.7 | 15.1 | 10.0 | 4.2 | | | | | | |
|---|
| 10 | 13.2 | 17.4 | 10.2 | 12.8 | 6.7 | 5.4 | | | | | | |
|---|
| 11 | 8.2 | 9.2 | 10.9 | 14.1 | 7.1 | 3.6 | | | | | | |
|---|
| 12 | 8.3 | 9.0 | 10.9 | 14.8 | 7.8 | 1.8 | | | | | | |
|---|
| 13 | 13.4 | 12.2 | 13.8 | 12.8 | 7.4 | 6.3 | | | | | | |
|---|
| 14 | 16.0 | 16.7 | 12.9 | 10.3 | 9.2 | 4.8 | | | | | | |
|---|
| 15 | 17.2 | 10.3 | 10.4 | 7.9 | 8.9 | 4.7 | | | | | | |
|---|
| 16 | 16.0 | 9.4 | 8.5 | 6.0 | 9.3 | | | | | | | |
|---|
| 17 | 12.2 | 9.5 | 11.2 | 6.0 | 9.1 | | | | | | | |
|---|
| 18 | 10.7 | 8.7 | 12.5 | 9.4 | 10.0 | | | | | | | |
|---|
| 19 | 14.7 | 12.5 | 14.0 | 13.5 | 7.8 | | | | | | | |
|---|
| 20 | 13.9 | 9.8 | 12.7 | 11.6 | 6.0 | | | | | | | |
|---|
| 21 | 14.7 | 8.4 | 9.3 | 10.2 | 3.7 | | | | | | | |
|---|
| 22 | 15.9 | 10.2 | 10.5 | 7.8 | 5.1 | | | | | | | |
|---|
| 23 | 12.9 | 11.7 | 10.0 | 7.1 | 5.1 | | | | | | | |
|---|
| 24 | 8.6 | 11.1 | 8.0 | 6.4 | 9.3 | | | | | | | |
|---|
| 25 | 11.4 | 12.2 | 11.6 | 4.6 | 6.1 | | | | | | | |
|---|
| 26 | 11.0 | 12.1 | 13.7 | 4.6 | 4.5 | | | | | | | |
|---|
| 27 | 11.8 | 14.1 | 14.4 | 7.5 | 7.6 | | | | | | | |
|---|
| 28 | 15.8 | 11.3 | 13.1 | 7.7 | 6.7 | | | | | | | |
|---|
| 29 | 13.7 | | 14.0 | 7.8 | 6.9 | | | | | | | |
|---|
| 30 | 14.1 | | 15.2 | 5.3 | 7.3 | | | | | | | |
|---|
| 31 | 14.1 | | 10.9 | | 4.1 | | | | | | | |
|---|
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