According to ING, kids age 5 - 12 receive the following amount in monthly allowance:
$5 or less: 13%
$6 - $10: 23%
$11 - $20: 39%
$21 or more: 24%
Looking at my current savings, I figured out the following. If I average $20 a month for my allowance, then I have already saved over 11 years worth! ($2800 divided by $20 = 140 months divided by 12 months = 11.66 years).
That also has me thinking that if I can save a portion of my allowance when I get older, I can add even more to my savings!