I got $2 per week IF my parents had the money. (This was mostly during the early-mid '90s.) EDIT: I managed to convince my parents to bump it up to a whopping $3 when I was a freshman in high school. The money was still inconsistent.
May as well use this time to rant: there was a year or two in which my dad started a family football pool. Didn't cost anything to enter, but the winner got an extra $2, so the prize money was really only if me or my brother won.
However - my brother was obsessed with football, memorized players, stats, etc. religiously. Me? I hated it (we only had one TV and I was only allowed to play video games on weekends, so football took away half my potential game time) and didn't know a touchdown from a field goal.
So during that time, I was lucky to get my $2 allowance, while my younger brother won an additional $2 almost every week during football season. My dad's a dick.