Because I didn't comment in my first days, I can't vote "ALWAYS", so it's "on most of them" (but the percentage of my total number of bills will be rising and rising and rising and rising

).
I write always down where I got it and of the larger notes where I spent it (of the smaller notes, I mostly spend more of them and than I can't write down which note I spent where).
The owner of the bill: offcourse only if it's not mine.
The condition of the note: only if it's torn or cut and if I got a series of them (that also means they're UNC).