The National Center for Education Statistics just released a brief that estimates 1.5 million students were homeschooled in the United States in spring of 2007 - that's 2.9 percent of the student population, up 74% since 1999 and 36% since 2003. You can read the entire paper here: http://nces.ed.gov/pubs2009/2009030.pdf
I haven't yet read the whole report, but have printed it off to read over shabbat.
And that branch that broke the car window? Turns out it actually smashed a lot more than that, but it was covered with snow and ice - $2,200 and 5 days later (hopefully next week) it should be fixed. Guess our time at home will extend into next week. At least our part is only $750! And plumber bill yet to come. Guess we're part of those storm damage/costs statistics now. :)