when did el salvador switch to the dollar???

Answer: 2001
Question: who played guitar on goodbye yellow brick road?

Answer: Davey Johnstone
Answer this question: what is the name of the ballpark in chicago??

Guaranteed Rate Field
Q: what color was elsa's hair supposed to be?A: black
Input: when did retina display come out for macbook pro?

Output: 2012
Please answer this: what was the number 1 single on may 26 1990?
Vogue