How large a chunk of fossil fuels do you use?
In Canada it'll be slightly different, but I'd guess that it's probably higher:
Let's try to personalize these ideas. The mass of the fossil fuels consumed by "the average British person" is about 16 kg per day (4kg of coal, 4kg of oil, and 8kg of gas).
- David MacKay, Sustainable energy - without the hot air, p. 161