[["company/index", "baseperiod 12/31/05", "baseperiod 12/31/06", "baseperiod 12/31/07", "baseperiod 12/31/08", "baseperiod 12/31/09", "12/31/10"], ["a o smith corp", "100.0", "108.7", "103.3", "88.8", "133.6", "178.8"], ["s&p small cap 600 index", "100.0", "115.1", "114.8", "78.1", "98.0", "123.8"], ["russell 1000 index", "100.0", "115.5", "122.1", "76.2", "97.9", "113.6"]]