cross and error of sum

Hello I've use the cross-table with this datas.

ag rgjj | Sum Of vp | Sum Of anz
00 2003 5.481.198,12 1.744
00 2004 2.963.296,80 1.051


The result of the crosstable are this...
rgjj
ag Data | 2003 | 2004 | Grand total
0 "vp+ | 5481198,12 | 2963296,8 | 8444494,92

anz+ | 97 | 1051 | 1148

The Anz+ of 2003 (97) is now wrong. But why?

Has anywhere a idea about this mistake?
Best Regards
Thomas Stahmer

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