to be honest, out of say 100 people I know, excluding under 20s, or above 60
id say 99% of them drink, 20% drink 2-3 std drinks every night, 30% have one drink a night a few nights a week, 20% get plastered every weekend/fortnight
you should have the category I fall into,
dont normally drink during the week, but if I go out on the weekend, ill have a big night, ie a typical binge drinker