How do you find out your blood type?

I think the doctor or someone at the local hospital might be able to take a sample of your blood and then they'll tell you your blood type after they've analysed it... you could ring up and ask them about it. Or you can donate blood for accident victims, and they'll tell you your blood type. Also, your blood type may or may not be on an old doctor's report, depending on why you were at the doctor's. Alternatively, your could ask your parents if they know.

Country   O+   A+   B+   AB+    O−    A−    B−   AB−   
Australia 40% 31% 8% 2% 9% 7% 2% 1%
Austria 30% 33% 12% 6% 7% 8% 3% 1%
Belgium 38.1% 34% 8.5% 4.1% 7% 6% 1.5% 0.8%
Canada 39% 36% 7.6% 2.5% 7% 6% 1.4% 0.5%
Denmark 35% 37% 8% 4% 6% 7% 2% 1%
Finland 27% 38% 15% 7% 4% 6% 2% 1%
France 36% 37% 9% 3% 6% 7% 1% 1%
Germany 35% 37% 9% 4% 6% 6% 2% 1%
Hong Kong, China 40% 26% 27% 7% <0.3% <0.3% <0.3% <0.3%
Ireland 47% 26% 9% 2% 8% 5% 2% 1%
Korea, South 35.2% 28.1% 26.1% 11.3% 0.1% 0.1% 0.1% 0.05%
Netherlands 39.5% 35% 6.7% 2.5% 7.5% 7% 1.3% 0.5%
New Zealand 38% 32% 9% 3% 9% 6% 2% 1%
Norway 34% 42.5% 6.8% 3.4% 6% 7.5% 1.2% 0.6%
Poland 31% 32% 15% 7% 6% 6% 2% 1%
Sweden 32% 37% 10% 5% 6% 7% 2% 1%
Turkey 29.8% 37.8% 14.2% 7.2% 3.9% 4.7% 1.6% 0.8%
UK 37% 35% 8% 3% 7% 7% 2% 1%
USA 37.4% 35.7% 8.5% 3.4% 6.6% 6.3% 1.5% 0.6%

Don't know what it stands for...

Also, I clot really easily, which is I guess supposed to be good if I'm in an accident or something, but it was annoying for the blood drive people.