Parents VIsa query on I 134 section 2

[subeeshdi]

I am applying Visa for my in laws.I was in L1 visa from 2010 to 2013,I came back to India and stayed in India for 1.5 years.I came back in H1 on Feb 2015..I 134 ,there is a section 2 “Have resided in US since ” What date would l select,First port of entry (2010) or last entry 2015.As i don’t have 2014 W2,Will that make confuse if i select 2010

Please respond to my id [email protected]
Thanks
Subeesh