Depends what you are trying to do?
Presuming that your numbers are kilobytes per second, then as some examples - iPlayer is around 220, Lovefilm can be around 300-400, radio streaming is around 20.
You wouldn't want to run a Minecraft server on that upload, but I run my I.T. business on 500/100 (rural UK) with 4 employees here with two Vonage lines and multiple connections to various hosted servers and cloud services.