I usually don't even write a number for expected salary... I'll just write "negotiable".
But if they insist on you writing a number, with 2 years experience, I'll say $2500 (neg).
You should get an offer of at least $2400 before accepting.
Anyway, can try asking here too -
https://www.facebook.com/groups/119326031532307/
There are many graphic designers in that group who can probably give you advice.