Replying to GLOBAL WARMING Poll

So i want to do a poll for my final project in Enivronmental Science on global warming affecting ski resorts. Can you just respond to this question for me. yes/no is a fine answer

Do you feel global warming is responsible for the negative effects we have seen in the ski industry in terms of snow coverage. If not, what is your explanation for the poor snow coverage in the past 5 years? obviously utah has done fairly well but im referring to the east coast and midwest and such. hwoever if utah has been hit by a snow problem let me know. thanks guys