Should have said 20 ish
Gerrard can hardly be fit into that category either based on this season
Gerrard fits into 20 goals a season, Lampard is 20 goals in the prem and Fabregas probably hasn't averaged 10, let alone 20. This season he's WAY up on previous seasons, though I think he's at something ridiculous like 25 games, 15 goals and 13 assists in the league alone, 23 goals and 19 assists in 41 starts this year is phenomenal.
He's only previously scored above 5 in a season, in ALL competitions including spain, league and all cups, once, he scored 13. He's not a prolific scorer in any possible interpretation.
In all competitions he's scored, 3, 4, 4, 5, 13, 23(and counting).
Lampards last 6 seasons were 20,20,23, 17, 21, 33, so actually more like a solid 20 a season in all competitions, this year he's doing incredibly well again. He's second in assists only to Fabregas to be honest.
Gerrard, 13, 22, 14, 20, 29, 13, not at all bad, infact very very good but not in Franks league.
I can't believe some people think Lampard isn't that good, he really is and maybe the most consistant player in the league, for like 8 years or so now.
Those numbers do include international goals, but honestly those 3 are all rather crap at scoring for their country, though Lampard has had a stand out year with 6 England goals, even without them 27 goals is fantastic.
http://soccernet.espn.go.com/players/stats?id=8941&cc=5739
Espn rocks for those kinds of stats, likewise the budweiser premier league site is pretty good for prem league stats. If you check goals scored across all midfielders, only 3 are above 10, Lamps, Fabregas and Malouda, and Malouda has scored 9 of his in those 5/6/7-0 type games Chelsea have won and only 3 in tight games where the team hasn't already beaten the other team into submission, fluke year for him.
I don't think theres EVER been midfielders apart from Lampard who consistantly score 20 goals, ever, its a fallacy. Scholes in his best ever year got 20, and Giggs best was 15, and both of those were in a year they played over 50 games total.
Lampard, and to a lesser degree Gerrard are simply very rare scoring midfielders.