(B) According to the $1991$ census,the birth rate was approximately $33$ per $1000$ and the death rate was approximately $14$ per $1000$.Therefore,the

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(B) According to the $1991$ census,the birth rate was approximately $33$ per $1000$ and the death rate was approximately $14$ per $1000$.Therefore,the ratio of birth rate to death rate is $33:14$.For comparison,according to the $2001$ census,the ratio was $26:8$.