Table:
text: Silpathorn Award
List of Silpathorn Award winners
List of Silpathorn Award winners
Year_ Literature Music Film Performing_arts
2004 Chart Korbjitti Danu Huntrakul Pen-Ek Ratanaruang Pradit Prasarttong
2005 Saksiri Meesomsueb Bundit Ungrangsee Apichatpong Weerasethakul Manop Meejamrus
2006 Win Lyovarin Nat Yontararak Wisit Sasanatieng Pichet Klunchuen
2007 Siriworn Kaewkan Narong Prangcharoen Thunska Pansittivorakul Nimit Pipithkul
2008 Paiwarin Khao-Ngam Khajornrit Raksa Narongrit Dhamabutra Nonzee Nimibutr Sineenadh Keitprapa
2009 Orasom Suddhisakorn Den Euprasert Pimpaka Towira Janaprakal Chandruang
2010 Saneh Sangsuk Chaiyoot Tosa-nga Aditya Assarat Nikorn Saetang

Question: Name the average year for Janaprakal Chandruang among the Silpathorn Awards?