| Jan | Feb | March | April | May | June | July | Aug | Sept | Oct | Nov | Dec |
| 1 | 1000.9 | 1006.2 | | | | | | | | | | |
| 2 | 1005.1 | 998.1 | | | | | | | | | | |
| 3 | 1011.4 | 998.8 | | | | | | | | | | |
| 4 | 1011.9 | 1005.8 | | | | | | | | | | |
| 5 | 1010.3 | 1016.3 | | | | | | | | | | |
| 6 | 1008.3 | 1009.0 | | | | | | | | | | |
| 7 | 1004.0 | 1009.7 | | | | | | | | | | |
| 8 | 1005.7 | 1011.8 | | | | | | | | | | |
| 9 | 999.9 | 1015.5 | | | | | | | | | | |
| 10 | 1001.8 | 1012.2 | | | | | | | | | | |
| 11 | 997.4 | 1011.2 | | | | | | | | | | |
| 12 | 1000.9 | 1011.5 | | | | | | | | | | |
| 13 | 1005.0 | 1004.1 | | | | | | | | | | |
| 14 | 985.4 | 1005.6 | | | | | | | | | | |
| 15 | 986.2 | 995.7 | | | | | | | | | | |
| 16 | 998.0 | 993.6 | | | | | | | | | | |
| 17 | 1009.4 | | | | | | | | | | | |
| 18 | 1005.6 | | | | | | | | | | | |
| 19 | 1012.5 | | | | | | | | | | | |
| 20 | 1011.1 | | | | | | | | | | | |
| 21 | 997.7 | | | | | | | | | | | |
| 22 | 973.2 | | | | | | | | | | | |
| 23 | 977.1 | | | | | | | | | | | |
| 24 | 975.4 | | | | | | | | | | | |
| 25 | 979.4 | | | | | | | | | | | |
| 26 | 988.2 | | | | | | | | | | | |
| 27 | 997.6 | | | | | | | | | | | |
| 28 | 1008.5 | | | | | | | | | | | |
| 29 | 1008.8 | | | | | | | | | | | |
| 30 | 1010.6 | | | | | | | | | | | |
| 31 | 1001.3 | | | | | | | | | | | |
|