TOTBIRTHIST Number of entries in the birth history X X X X X X X X X X X X X X X X X X X X X X X X X TOTBIRTHIST X X X X X X X X X X X X X X X X X X X X X X X X X TOTBIRTHIST X X X X X X X X X X X X X X X X X X X X X X X X X TOTBIRTHIST X X X X X X X X X X X X X X X X X X X X X X X X X TOTBIRTHIST X X X X X X X X X X X X X X X X X X X X X X X X X TOTBIRTHIST X X X X X X X X X X X X X X X X X
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