Our long-term mission is to maintain our track record of delivering outstanding TSR relative to that of the S&P 500. Our long-term business model for delivering this sustained earnings growth is based on what we call our “evergreen business model,” reflecting annual organic revenue growth of 3.0%, gross margin expansion, tight management of overhead costs and operating margin improvement of roughly 50 basis points to achieve sustained annual earnings growth of 8-10%, excluding the effect of acquisitions..