IPO activity in the U.S. reached its highest level in 2013 since the record year of 2000. In total, 222 companies went public in the U.S. in 2013, raising nearly $55 billion, according to data from Renaissance Capital.

This, however, only represents 57% of the proceeds raised in the year 2000. We still have some way to go to reach these peak levels, which are unlikely to happen any time soon.