Percentage of waste that is recyclable

I was thinking earlier today, walking along a street on garbage day, about the percentage of garbage that can actually be recycled. I was thinking, still am for that matter, somewhere around 90%. This is based really on my own experience, and how I feel, no scientific hoohah.

If a city/town has a good recycling program, and accepts the vast majority of stuff that generally is thought of as being recyclable, and people compost, be it their own, or in city bins, surely 90% can easily be attained.