season 1: April 1 1997 season 2: January 28 1999 season 3: October 14 1999 season 4: August 3 2000 season 5: August 9 2001 season 6: November 21 2002 season 7: September 4 2003 season 8: September 8 2004 season 9: October 6 2005 season 10: September 28 2006 season 11: November 8 2007 season 12: December 4 2008 season 13: January 7 2010 season 14: September 23 2010 season 15: September 22 2011 season 16: October 11 2012 season 16.5: April 25 2013 season 17: October 17 2013 Special: Apirl 16 1998
source: http://en.wikipedia.org/wiki/List_of_Pokémon_episodes
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