To answer your question about how many emergency evacuations occured last year....
1/16/03 Continental Express ERJ-145LR N16571 over ran runway at Cleveland, OH
47pax uninjured in evac
1/17/03 TAME Flight 120 F-28 HC
aborted takeoff 2 Serious injured, 74 no injuries
3/26/03 airTran Airways Flight 356 B717-200 N957AT 1 Serious Injury, 22 Minor Injuries, 60 No injuries
4/16/03 American Airlines Flight 2439 MD
-82 N452AA Smoke in cabin, 1 Serious Injury, 49 No Injuries
6/23/03 Delta Airlines Flight 1036 Boeing 757-232 N633DL 2 Serious Injuries, 31 Minor Injuries, 141 No Injuries
9/25/03 American Airlines Flight 1128 MD
-82 Smoke/Fumes in Cabin, 8 Minor Injuries, 86 No Injures
And the year Before....
1/14/02 Lion Airlines Boieng 737-200 PK
Overshot runway, 7 Minor Injuries, 96 Uninjured2/28/02 Northwest Airlines FLight 1118 DC-9-41 N754NW Engine Fire on pushback from Indianapolis, IN
1 Serious Injury, 74 No Injuries
3/31/02 Delta Airlines MD
-11 N809DE 5 Serious Injuries, 11 Minor Injuries, 229 Uninjured
6/2/02 Atlantic Southeast Airlines Flight 4509 CRJ-200 N849AS Gear Collapse 50 Passengers uninjured
8/11/02 Iberia Airlines Boeing 747-256 EC
-DNP Engine Fire on takeoff from JFk
2 Serious Injuries, 35 Minor Injuries, 349 Uninjured
8/28/02 America West Airlines A320-231 N635AW Nose Gear Collapse. 1 Serious Injury, 9 Minor Injuries, 149 No Injuries
11/9/02 American Airlines MD
-82 N452AA Smoke in Cabin. 1 Serious Injury, 6 Minor Injuries, 72 No Injuries.
These are just the evacuations in the USA NTSB Database. I'm sure there are many more in other coutries.
There could have been more injuries in these evacuations without flight attendants instructing passengers how to go down the slides, and taking charge and control of the situation. How a flight attendant performs in an emergency situation is very dependant not just on their training, but how rested they are and their energey level.
Cross check complete.