How many pices did Beethoven compose while losing his hearing?

Beethoven's hearing loss began to become a problem for him around 1803. He conducted a very large amount of music in from that time period to his death, including; symphonies 3-8, two piano concertos, several piano sonatas, 12 string quartets, and an opera. His 9th (and final complete symphony) was composed when he was ENTIRELY deaf.