Go into your survey summary page, and then select the Responses menu at the top, select Responses and statistics.
Then, you'll see a menu item Export with two relevant options:1. Export responses will direct you to a screen where you can select from a variety of options, including CSV, Excel, the newer SPSS .SAV format, R (syntax and data file), and STATA2. Export responses to SPSS will export the older .DAT and .SPS formats -- HOWEVER: The newer .SAV format described above is recommended.