Consolidated Statements of Income For the Years Ended December 31, 1998, 1999, and 2000 (in thousands, except per share data) 1998 1999 2000 Revenues: Core research $46,842 $64,697 $120,477 Advisory services and other 14,725 22,571 36,670 Total revenues 61,567 87,268 157,147 Operating expenses: Cost of services and fulfillment 22,038 27,715 45,470 Selling and marketing 20,896 31,131 57,957 General and administrative 6,688 9,865 18,632 Depreciation and amortization 2,763 4,003 7,944 Costs related to acquisition (Note 2) — 694 — Total operating expenses 52,385 73,408 130,003 Income from operations 9,182 13,860 27,144 Other income, net 2,957 3,710 6,893 Income before income tax provision 12,139 17,570 34,037 Income tax provision 4,592 6,589 12,423 Net income $ 7,547 $10,981 $ 21,614 Basic net income per common share $ 0.44 $ 0.61 $ 1.03 Diluted net income per common share $ 0.40 $ 0.55 $ 0.88 Basic weighted average common  shares outstanding 17,041 18,028 20,989 Diluted weighted average common  shares outstanding 18,744 20,067 24,526 (The accompanying notes are an integral part of these consolidated financial statements.)