(in thousands, except client companies and per share data) Financial Highlights Year Ended December 31, 1998 1999 2000 Revenues $61,567 $ 87,268 $157,147 Operating income  $ 9,182 $ 13,860 $ 27,144 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 Pro forma diluted net income per common share (1) $ 0.58 December 31, 1998 1999 2000 Stockholders’ equity  $53,533 $ 78,805 $176,928 Deferred revenue  $38,894 $ 66,233 $102,527 Agreement value (2) $69,095 $115,772 $187,824 Client companies (3) 1,271 1,793 2,378 (1) Pro forma diluted net income per common share excludes acquisition-related expenses. (2) Agreement value represents the total revenues recognizable from all core research and advisory service contracts in force  at a given time, without regard to how much revenue has already been recognized. (3) Client companies represents the total number of companies with contracts for core research and advisory services in force  at a given point in time. Forrester may provide multiple services to more than one business unit of a client company.  Net Income (in millions) Operating Income (in millions) Revenues (in millions) $25.0 20.0 15.0 10.0 5.0 0 1998 1999 2000 $30.0 25.0 20.0 15.0 10.0 5.0 0 1998 1999 2000 $160.0 140.0 120.0 100.0 80.0 60.0 40.0 20.0 0 1998 1999 2000