YEAR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual 24-hr Avg.
1995    1017 1199 1448 1719 1724 1403 1062 895 850
1996 690 809 898 1015 1148 1322 1791 1849 1466 1121 876 785 1148
1997 680 833 819 1003 1221 1473 1814 1864 1499 1181 1064 953 1200
1998 795 974 1080 1200 1419 1596 1911 1884 1602 1055 979 935 1286
1999 898 924 1047 1188 1349 1603 1897 1915 1557 1189 1059 990 1301
2000 841 949 1021 1110 1311 1543 1839 1883 1458 1186 989 872 1250
2001 816 831 964 1080 1271 1488 1771 1819 1424 1182 1068 943 1221
2002 955 1035 1019 1160 1380 1577 1872 1932 1634 1402 1158 1062 1349
2003 981 1050 1005 1183 1354 1623 1867 1810 1520 1280 976 956 1300
2004 866 1048 1078 1281 1448 1613 1892 1850 1598 1311 1142 1066 1349
2005 881 1065 1065 1143 1336 1504 1820 1768 1434 1173 1068 976 1269
2006 881 935 1059 1168 1342 1538 1765 1635 1394 1180 965 913 1231
2007 853 948 1015 1144 1288 1492 1753 1715 1431 1125 985 822 1214
2008 761 883 934 976 1216 1307 1657