A good benchmark IMHO to use is the S&P 500. Here's CNN's S&P tracker:
http://money.cnn.com/data/markets/sandp/From January 1st, it's up .95% for the year.
For 1st Quarter (Jan 1st - Mar 31st) it was up 1.44%.
The higher your stock % in a low cost S&P stock index your returns minus dividends should be close to the S&P 500.
Your return may or may not be "good" depending on your asset allocation, financial goals, and fund selections.
I hold about 30% bonds in my portfolio so, when the market is doing well, my gains are lower. When it's not my losses are also lower.