2000-2002 punk and pop punk exploudes back to mainstream
2001-2003 emotional melodic punk starts to sway in alot of fans
2003 the punk in "emotional punk" is completley taken out and emo becomes its own genre and is almost soft rock or softer
2002-2005 screamo(intense emotional punk with some harder riffs)comes in
2004-pesent hardcore developes (a thin line between screamo and metal)and is first genre to come out of punk that is not made fun of on a daily basis.
side note: indie: a primarily NY indepent melodic experimental genre. that sounds nothing like hardcore for some reason goes hand in hand
indie and hardcore are the best non-sophomoric genres out today. and experimantal which is becoming the next big genre.