How much water do a person drink a year?

As we all know, 8 glasses of water should be drank by the average person each day. That's 2 litres. But even more amazing; if you drink 8 glasses of water every day for a year, that means you drink 2920 glasses of water each year. Now, how many litres is that, are you smart enough to work it out. I have done the first bit.