Highest average clean sheet in Premier League since 1992

There are 13 goalkeepers that have more than 100 cleansheets in the Premier League since 1992, David James have the most with 169 in totalt in 572 matches. But whos the one with the highest average cleansheets of these great  goalkeepers? Youre probably thinking of Peter Scmeichel, Van Der Sar and Cech I think? Well-they are up there but I`m guessing the top 3 will have at least one small surprise for most of you.....

1.Petr Cech 150/313 0.49
2.Jose Reina 134/285 0.47
3.Mark Schwarzer  149/504 0.41 (94 of 149 for Middlesbrough!)
4.David Seaman 142/344 0.41
5. Peter Schmeichel 129/310 0.41
6.Nigel Martyn 138/372 0.37 (82 out of 138 for Leeds!)
7.Tim Howard 111/325 0.34
8.Edwin Van Der Sar 134/314  0.32
9. Jussi Jaaskelainen 108/435 0.32
10. Thomas Sørensen 109/361 0.3
11.David James 169/572 0.29 (Clean sheets for 5 different clubs!)
12.Brad Friedel 132/450 0.29
13.Shay Given 115/440 0.26

Luis Suarez goalscore average

As of 16.january 2014 the average goalscore for Luis Suarez is  twice as high (1.38) as the average achieved by Premier League topscorer 2013/2014 season Robin Van Persie (0.68)