What is a mother's work really worth?

I found this on my yahoo page and had to share the most important part of the article.
This year, a stay-at-home mom performing the 10 most popular "mom-job functions" does the work equivalent of a $122,732 salary, up 5 percent over last year's calculations. A mom who works outside the home 40 hours a week does work that equates to an annual cash compensation of $76,184, an 11 percent increase.
You can read it all at:
http://shine.yahoo.com/channel/life/what-is-a-mothers-work-really-worth-456608/