#16: December 2019 – Princeton

#15: April 2019 – New York City

#14: July 2018 – Philadelphia

#13: December 2017 – New York City

#12: July 2016 – District of Columbia

#11: November 2011 – Los Angeles

#10: November 2011 – New York City

#9: September 2010 – New York City

#8: June 2009 – New York City

#7: February 2009 – New York City

#6: September 2008 – Boston

#5: April 2008 – New York City

#4: February 2007 – New York City

#3: September 2006 – Toronto

#2: July 2006 – New York City

#1: April 2006 – New York City