Depends on location – different areas rise and fall at different times than others.
I would guess that Murrieta is at or near its bottom, Temecula is close behind, followed by Escondido and east county in fall/winter of 2010, 4S, Scripps Ranch and San Elijo Hills in 2011, and the coast in 2012.
Disclaimer: Those are purely my semi-educated guesses and may be wildly inaccurate.