The number of children being raised by their grandparents has risen sharply since the start of the recession in 2007, according to a new Pew Research Center study that found 1 in 10 children in the U.S. now lives with a grandparent.

In all, 2.9 million children are being raised mainly by at least one grandparent.

That’s 4% of all children.

The survey also found that spending time with grandchildren is viewed as one of the greatest benefits of growing older.

Grandparents who are not the primary care takers of their grandchildren are still helping out.  More than 50% of those who are in their 60s and 70s who have grandchildren have said they helped their adult children with childcare in the past 12 months.

Read the full report here.