Why now many pay searches engine bid low pity?

Type of Payment Quantity Earnings
Date: 05/18/2004 Clicks By Referrals 81 $0.4543
# O8 Z: G" @( A* j" {5 b; j8 q6 RDate: 05/19/2004 Clicks By Referrals 141 $0.483
Date: 05/26/2004 Clicks By Referrals 64 $0.1235


6 W( k) y: ?9 Y0 @, V% EWhy now many pay searches engine bid low pity?And has the more and more low tendency! Worried!