what is the difference in years between his last role and his first role?
26
col : year | english title | chinese title | director | role row 1 : 1933 | twenty-four hours in shanghai | 上海二十四小时 | shen xiling |  row 2 : 1937 | street angel | 马路天使 | yuan muzhi | xiao chen row 3 : 1937 | crossroads | 十字街头 | shen xiling | zhao row 4 : 1947 | far away love | 遙遠的愛 | chen liting | xiao yuanxi row 5 : 1947 | rhapsody of happiness | 幸福狂想曲 | chen liting |  row 6 : 1949 | crows and sparrows | 烏鴉与麻雀 | zheng junli | little broadcast row 7 : 1949 | women side by side | 丽人行 | chen liting | zhang yuliang row 8 : 1950 | the life of wu xun | 武训传 | sun yu | wu xun row 9 : 1951 | the married couple | 我们夫妇之间 | zheng junli |  row 10 : 1956 | li shizhen | 李时珍 | shen fu | li shizhen row 11 : 1958 | lin zexu | 林则徐 | zheng junli | lin zexu row 12 : 1959 | nie er | 聂耳 | zheng junli | nie er
what is the difference in years between his last role and his first role?
Year English Title Chinese Title Director Role
1933 Twenty-Four Hours in Shanghai 上海二十四小时 Shen Xiling
1937 Street Angel 马路天使 Yuan Muzhi Xiao Chen
1937 Crossroads 十字街头 Shen Xiling Zhao
1947 Far Away Love 遙遠的愛 Chen Liting Xiao Yuanxi
1947 Rhapsody of Happiness 幸福狂想曲 Chen Liting
1949 Crows and Sparrows 烏鴉与麻雀 Zheng Junli Little Broadcast
1949 Women Side by Side 丽人行 Chen Liting Zhang Yuliang
1950 The Life of Wu Xun 武训传 Sun Yu Wu Xun
1951 The Married Couple 我们夫妇之间 Zheng Junli
1956 Li Shizhen 李时珍 Shen Fu Li Shizhen
1958 Lin Zexu 林则徐 Zheng Junli Lin Zexu
1959 Nie Er 聂耳 Zheng Junli Nie Er
26