In this table:
Y is the year
A= balance at start of year
B= interest over full year
C= amount paid in on 31 Dec
D= year end balance at 31 Dec
Y <A> <C> < D>
1, 42181, 5062, 5000, 52242
2, 52242, 6269, 5000, 63511
3, 63511, 7621, 5000, 76133
4, 76133, 9136, 5000, 90269
5, 90269, 10832, 5000, 106101
6, 106101, 12732, 5000, 123833
7, 123833, 14860, 5000, 143693
8, 143693, 17243, 5000, 165936
9, 165936, 19912, 5000, 190848
10, 190848, 22902, 5000, 218750
11, 218750, 26250, 5000, 250000