I found this interesting website http://www.typeonline.co.uk/typingspeed.php? that offers a free typing test. How many words can you type per minute? I remember my mom saying she could type 90+ words or something crazy - which explains all the emails I get from her ;-).
I got up to 77 on my work computer and just scored 82 on this laptop. More relaxed at home? More user-friendly keyboard? Better test paragraph? Try it for yourself.