[Table] header: Year | Men's singles | Women's singles | Men's doubles | Women's doubles | Mixed doubles row 1 : 1984 | Icuk Sugiarto | Helen Troke | Christian Hadinata Hadibowo | Gillian Gilks Karen Beckman | no competition
row 2 : 1985 | Icuk Sugiarto | Wu Jianqiu | Rudy Heryanto Bobby Ertanto | Guan Weizhen Wu Jianq | no competition
row 3 : 1986 | no competition | no competition | no competition | no competition | no competition
row 4 : 1987 | Zhao Jianhua | Luo Yun | Tian Bingyi Li Yong | Guan Weizhen Lin Ying | Peter Buch Grete Mogensen
row 5 : 1988 | Xiong Guobao | Li Lingwei | Tian Bingyi Li Yong | Chung Myung-hee Hwang Hy | Steen Fladberg Gillian Clark
row 6 : 1989 | Alan Budikusuma | Tang Jiuhong | Park Joo-bong Kim Moon-s | Guan Weizhen Lin Ying | Park Joo-bong Chung Myung
row 7 : 1990 | Sompol Kukasemkij | Huang Hua | Park Joo-bong Kim Moon-s | Yao Fen Lai Caiqin | Park Joo-bong Chung Myung
row 8 : 1991 | Alan Budikusuma | Susi Susanti | Eddy Hartono Rudy Gunawan | Hwang Hye-young Gil Young- | Lee Sang-bok Chung So-you
row 9 : 1992 | Joko Suprianto | Susi Susanti | Ricky Subagja Rexy Maina | Nong Qunhua Zhou Le | Aryono Miranat Eliza Nathan
row 10 : 1993 | Joko Suprianto | Susi Susanti | Bambang Suprianto Rudy Gun | Ge Fei Gu Jun | Liu Jianjun Wang Xia
row 11 : 1994 | Joko Suprianto | Susi Susanti | Denny Kantono Antonius Budi | Ge Fei Gu Jun | Tri Kusharjanto Minarti Tim
row 12 : 1995 | Dong Jiong | Lim Xiaoqing | Jiang Xin Huang Zhanzhong | Gil Young-ah Jang Hye- | Park Joo-bong Ra Kyung-
row 13 : 1996 | Dong Jiong | Wang Chen | Candra Wijaya Sigit Budi | Deyana Lomban Indarti I | Tri Kusharjanto Minarti Tim
row 14 : 1997 | Hendrawan | Wang Chen | Yoo Yong-sung Lee Don | Tang Yongshu [Qin Yiy | Michael Søgaard Rikke Ol
row 15 : 1998 | no competition | no competition | no competition | no competition | no competition
row 16 : 1999 | Chen Gang | Dai Yun | Yu Jinhao Chen Qiqiu | Qin Yiyuan Gao Ling | Liu Yong Ge Fei
row 17 : 2000 | Hendrawan | Ye Zhaoying | Zhang Jun Zhang Wei | Ge Fei Gu Jun | Zhang Jun Gao Ling
row 18 : 2001 | Yong Hock Kin | Tracey Hallam | Sigit Budiarto Luluk Had | Eny Erlangga Jo Novita | Candra Wijaya Jo Novita
row 19 : 2002 | no competition | no competition | no competition | no competition | no competition
row 20 : 2003 | Ronald Susilo | Dai Yun | Yoo Yong-sung Ha Ta | Wei Yili Zhao Tingting | Chen Qiqiu Zhao Tingting
row 21 : 2004 | Boonsak Ponsana | Yao Jie | Luluk Hadiyanto Alvent | Zhang Dan Zhang Yawen | Nathan Robertson Gail Emms
row 22 : 2005 | Muhammad Hafiz Hashim | Yao Jie | Jung Jae-sung Lee Jae- | Lee Kyung-won Lee Hyo- | Lee Jae-jin Lee Hyo-
row 23 : 2006 | Chen Yu | Zhu Lin | Lee Yong-dae Jung Ja | Lee Kyung-won Lee Hyo- | Lee Yong-dae Hwang
row 24 : 2007 | Chen Hong | Zhu Lin | Lee Jae-jin Hwang Ji- | Gao Ling Huang Sui | He Hanbin Yu Yang
row 25 : 2008 | Lin Dan | Xie Xingfang | Fu Haifeng Cai Yun | Yang Wei Zhang Jiewen | Xie Zhongbo Zhang Ya
row 26 : 2009 | Nguyen Tien Minh | Liu Jian | Chan Peng Soon Lim Khim Wah | Yang Wei Zhang Jiewen | Songphon Anugritayawon
row 27 : 2010 | cancelled | cancelled | cancelled | cancelled | cancelled
row 28 : 2011 | Chen Long | Li Xuerui | Jung Jae-sung Lee Yong | Tian Qing Zhao Yunlei | Lee Sheng-mu Chien Yu-
row 29 : 2012 | Sony Dwi Kuncoro | Saina Nehwal | Liu Xiaolong Qi | Lam Narissapat Saralee Thungt | Tao Jiaming Tang Jinhua
row 30 : 2013 | Srikanth Kidambi | Ratchanok Inthanon | Shin Baek-cheol Yoo | Greysia Polii Nitya Kris | Markis Kido Pia Zebadiah [/Table] Answer this question based on the above table: What is the average year with Nathan Robertson Gail Emms in mixed doubles?

Answer: 2004.0