YEAR,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,Annual 24-hr Avg.
1990,5470,5263,5435,6395,6696,7279,7934,7988,6559,5820,5329,4580,6235
1991,4514,4890,4852,5560,6462,6747,7936,8302,6802,5974,5277,5186,6051
1992,4907,5124,5622,6280,7022,7478,8744,8618,7390,6715,6055,5117,6613
1993,4821,5365,5531,5931,7075,7540,8180,8510,7637,6602,6133,5888,6609
1994,5609,5728,6042,6620,7547,7908,9269,9367,7981,6789,5861,5904,7062
1995,5777,5953,6292,6694,7513,7707,8697,8624,7629,6794,6329,6118,7011
1996,5502,5776,6082,6627,7410,,,9324,7731,7182,5947,5448
1997,5544,5833,5900,7101,8313,8689,9545,9644,8161,7325,6716,6239,7418
1998,5716,6148,6489,7204,7999,8443,9721,9535,8198,7386,6699,6603,7512
1999,5859,6106,6482,7150,8089,8687,9784,9788,8551,7492,6784,6514,7607
2000,5789,6458,6444,7104,8074,8605,8904,8581,7110,7061,6326,5957,7201
2001,5835,6057,6167,6517,7688,7991,9022,8915,7812,6989,6518,6058,7131
2002,5969,6248,5959,6701,7870,8436,9669,9672,8274,7520,6709,6417,7454
2003,6273,6539,6191,6891,8263,8695,9904,9424,8116,7542,6436,6449,7560
2004,6081,6551,6770,7453,7869,8522,10032,9556,8436,7624,6946,6853,7724
2005,6169,6822,6906,7329,8334,8641,9969,9714,8256,7288,6884,6615,7744
2006,6201,6745,6892,7063,8286,8630,9722,9583,8418,7663,6788,6636,7719
2007,6430,6664,6907,7352,8365,8793,10062,9962,8398,7528,6941,6277,7807
2008,5952,6311,6083,6383,7515,7673,9082