Generally look at the performance index to evaluate returns, NEVER NEVER the price index, please.
The total return of the S&P 500 from January 1999 until now is 47.7%, or 2.91% per annum (EDIT: had incorrect numbers!). Not a good return, but you also picked one of the worst dates.
Please also note that the price and dividend returns ADD UP. You don't need to choose between one or the other.