How many people have been killed on roller coasters?
"I've heard about X number of anything per day..." Is not an answer worthy of being recorded. It is meaningless. Unless a lot more information is included such as who you might be, your qualifications and situation which presumably would be relevant for being in a position to hear anything of relevance. From whom this was heard and similar details are also crucial. Otherwise, it gives no useful information and contributes only to confusion.