This would be much easier to read if the website would import Excel spreadsheets and I'm not sure what it proves. However, it shows the total German aircraft production from 1934 to 1945, the number of trainers produced and finally trainers as a percentage of total aircraft production.
1934 - 1,968 - 1,278 - 65%
1935 - 3,183 - 1,686 - 53%
1936 - 5,112 - 3,069 - 60%
1937 - 5,606 - 2,721 - 49%
1938 - 5,235 - 1,624 - 31%
1939 - 7,350 - 1,051 - 14%
1940 - 10,247 - 1,870 - 18%
1941 - 12,401 - 1,121 - 9%
1942 - 15,551 - 1,098 - 7%
1943 - 25,527 - 2,274 - 9%
1944 - 40,593 - 3,693 - 9%
1945 - 7,540 - 318 - 4%
Total - 140,313 - 21,803 - 16%