The sacrifice that people came and brought was shared all together. Tithes are different. See, in our church we say, if you can't afford the church tithe then just give a pledge. The pledges worked real well. For the first fiscal year we were out of debt, paid everything.
Nobody knows what everyone else pledged.
Only the bookkeeper knows everything. But it helps us to be accountable for God's work. You can't live in a house and not pay rent. After a while you'll be put out. You can't buy a brand-new car and forget to make the monthly payment.