Automatic Counter Volumes
| Year | Jan. | Feb. | Mar. | Apr. | May. | Jun. | Jul. | Aug. | Sep. | Oct. | Nov. | Dec. | 24-Hour Annual Avg. |
| 1990 |
3913 |
5601 |
5082 |
5060 |
5272 |
5423 |
5260 |
5418 |
5054 |
5091 |
4960 |
4662 |
5061 |
| 1991 |
4607 |
4929 |
5198 |
5440 |
5414 |
5522 |
5421 |
5615 |
5222 |
5742 |
5607 |
5461 |
5350 |
| 1992 |
5358 |
5902 |
6178 |
6378 |
6312 |
6574 |
6488 |
6263 |
6300 |
6186 |
5896 |
5524 |
6129 |
| 1993 |
4818 |
5607 |
5965 |
6467 |
6479 |
6463 |
6372 |
6364 |
6298 |
6458 |
6193 |
6343 |
6154 |
| 1994 |
5962 |
6230 |
6716 |
6936 |
7249 |
7231 |
7058 |
7332 |
7058 |
7318 |
6728 |
6891 |
6897 |
| 1995 |
|
6347 |
6596 |
6850 |
6872 |
7173 |
6992 |
7235 |
6469 |
7472 |
6755 |
6440 |
|
| 1996 |
6291 |
6818 |
6921 |
6663 |
7519 |
8091 |
7765 |
7978 |
8495 |
8017 |
7736 |
6917 |
7434 |
| 1997 |
6920 |
7389 |
7812 |
8227 |
8375 |
8404 |
7820 |
7667 |
7516 |
7976 |
7280 |
7110 |
7708 |
| 1998 |
6801 |
7384 |
7676 |
8036 |
7904 |
8177 |
7956 |
8214 |
8052 |
7983 |
7478 |
7561 |
7769 |
| 1999 |
7367 |
7427 |
7930 |
8469 |
8566 |
8829 |
8453 |
8656 |
8575 |
8491 |
8078 |
7811 |
8221 |
| 2000 |
7712 |
8369 |
8216 |
8824 |
9163 |
9139 |
9189 |
9951 |
10183 |
9394 |
8629 |
8418 |
8932 |
| 2001 |
7950 |
8390 |
9118 |
9653 |
9841 |
8994 |
9886 |
9623 |
9318 |
9092 |
8778 |
8306 |
9079 |
| 2002 |
8694 |
9177 |
9687 |
10338 |
10386 |
10271 |
11535 |
12945 |
11906 |
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