when was YM, ER2, NQ, ES created?

what year was YM, ER2, NQ, ES created?
thanks

 

google much

 

the mini nasdaq, dow and spooz have been around for awhile

 

?.......es was '97. I believe nq was '98.

 

ES=97
NQ=99
ER2=01
YM=02 ( not sure ... )

 

ym was earlier, not really sure but think something like 98 or 99

 

I'm quite sure it was after ER2, EMD and the currency futures. April 2002 I think...