I write 200+ words per day, every day. I speak at about 3 words per second, so 200 words means recording a little more than 1 minute day, which is very easy.
I rarely write directly. It's much easier for me to say with voice what I want, then to transcribe the audio file. Yes, it takes longer, but writer block can take WAY longer. Plus, I can record that minute when I'm rested, and transcribe it when I'm tired.
200+ words per day means 73,000+ words per year. If you want to learn more about how I do it, please see this link: 200+ words per day.