| Jan | Feb | March | April | May | June | July | Aug | Sept | Oct | Nov | Dec |
| 1 | 1009.6 | 1011.6 | 1022.2 | 1027.5 | 1040.3 | 1015.8 | | | | | | |
| 2 | 1011.9 | 1009.7 | 1019.5 | 1035.5 | 1037.5 | 1004.2 | | | | | | |
| 3 | 1021.8 | 1006.8 | 1024.1 | 1034.9 | 1037.9 | 1026.5 | | | | | | |
| 4 | 1019.1 | 1022.6 | 1032.5 | 1028.3 | 1038.3 | 1016.6 | | | | | | |
| 5 | 1023.9 | 1025.7 | 1036.5 | 1026.8 | 1037.3 | 1021.2 | | | | | | |
| 6 | 1019.4 | 1022.4 | 1031.9 | 1027.0 | 1031.3 | 1016.1 | | | | | | |
| 7 | 1013.8 | 1021.2 | 1022.0 | 1023.5 | 1025.9 | 1032.0 | | | | | | |
| 8 | 1012.2 | 1020.4 | 1023.5 | 1023.0 | 1014.4 | 1039.0 | | | | | | |
| 9 | 1010.3 | 1023.2 | 1021.6 | 1017.3 | 1003.1 | 1037.2 | | | | | | |
| 10 | 1011.5 | 1023.8 | 1020.1 | 1021.5 | 1007.3 | 1038.6 | | | | | | |
| 11 | 1008.8 | 1022.6 | 1019.6 | 1020.0 | 1027.7 | 1038.9 | | | | | | |
| 12 | 1017.1 | 1025.3 | 1021.7 | 1022.8 | 1026.6 | 1043.5 | | | | | | |
| 13 | 1019.1 | 1015.5 | 1003.0 | 1012.1 | 1029.5 | 1038.3 | | | | | | |
| 14 | 1009.0 | 1009.7 | 1004.6 | 1012.5 | 1037.8 | 1038.6 | | | | | | |
| 15 | 1010.1 | 1009.9 | 1009.7 | 1007.9 | 1041.5 | 1036.0 | | | | | | |
| 16 | 1016.6 | 1008.5 | 1016.0 | 1015.8 | 1042.7 | | | | | | | |
| 17 | 1024.5 | 1015.1 | 1017.0 | 1022.8 | 1041.2 | | | | | | | |
| 18 | 1027.1 | 1012.5 | 1017.3 | 1016.6 | 1036.6 | | | | | | | |
| 19 | 1019.6 | 1007.3 | 1010.3 | 1009.4 | 1034.0 | | | | | | | |
| 20 | 1018.2 | 1012.0 | 1012.0 | 1010.4 | 1037.0 | | | | | | | |
| 21 | 1012.1 | 1022.0 | 1016.1 | 1006.3 | 1034.0 | | | | | | | |
| 22 | 997.9 | 1018.6 | 1018.8 | 1023.9 | 1042.5 | | | | | | | |
| 23 | 986.1 | 1024.1 | 1032.2 | 1029.6 | 1035.8 | | | | | | | |
| 24 | 982.1 | 1025.3 | 1038.3 | 1032.9 | 1030.3 | | | | | | | |
| 25 | 1015.3 | 1028.8 | 1033.4 | 1033.8 | 1028.6 | | | | | | | |
| 26 | 998.2 | 1021.4 | 1026.2 | 1028.2 | 1031.2 | | | | | | | |
| 27 | 1008.7 | 1024.5 | 1018.9 | 1024.8 | 1031.7 | | | | | | | |
| 28 | 1021.9 | 1028.5 | 1016.4 | 1029.0 | 1024.2 | | | | | | | |
| 29 | 1024.1 | | 1015.9 | 1031.0 | 1027.1 | | | | | | | |
| 30 | 1022.6 | | 1009.2 | 1041.1 | 1030.8 | | | | | | | |
| 31 | 1016.7 | | 1029.0 | | 1028.0 | | | | | | | |
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