YEAR,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,Annual 24-hr Avg.
1998,4163,4721,5213,5651,6123,6221,5644,6358,6289,6244,5452
1999,
2000,,,,,6538,,7856,7579,6563,5952,5323,4887
2001,5647,5655,6562,,,,,,,,,4389
2002,
2003,,8165,8214,8939
2004,,,,,,7701,8629,8893
2005,
2006,
2007,
2008,