Sorry Damir, I'm metrically challenged and still use pints and miles. Doing a rough conversion, it appears that you are using a pint of oil every 600 miles. This is too high.
My 4GTL at 153,000 miles used 3 pints maximum every 6000 miles.
Your oil consumption does seem a bit high - Steve's engine is more normal, but unless you have other problems such as excessive smoke, oily spark plugs, or failing your national car test then I wouldn't worry too much at the moment.