Where to get S&P500 index historical intraday data?

Where to get S&P500 index historical intraday 10 minute data? I need data back to 2000 or earlier. I tried opentick, it only retrives back to 2006. Anyone knows any good historical data provider? I don't mind paying a fee if it is not too expensive.

 

http://www.anfutures.com

I've bought their 1min data

 

Thanks. Do they have S&P 500 index intraday data? It seems that they have data for ES future instead of S&P 500 index.

 

I assumed you meant the ES, sorry.