Sex;Social class;Average number;Total BOTH SEXES;Total;Average;1.31 BOTH SEXES;Total;Standard deviation;0.87 BOTH SEXES;I;Average;1.34 BOTH SEXES;I;Standard deviation;0.94 BOTH SEXES;II;Average;1.33 BOTH SEXES;II;Standard deviation;0.77 BOTH SEXES;III;Average;1.32 BOTH SEXES;III;Standard deviation;0.92 BOTH SEXES;IV;Average;1.36 BOTH SEXES;IV;Standard deviation;0.95 BOTH SEXES;V;Average;1.31 BOTH SEXES;V;Standard deviation;0.88 BOTH SEXES;VI;Average;1.25 BOTH SEXES;VI;Standard deviation;0.74 BOTH SEXES;No data recorded;Average;1.24 BOTH SEXES;No data recorded;Standard deviation;0.58 MALES;Total;Average;1.28 MALES;Total;Standard deviation;0.79 MALES;I;Average;1.32 MALES;I;Standard deviation;1.03 MALES;II;Average;1.34 MALES;II;Standard deviation;0.77 MALES;III;Average;1.26 MALES;III;Standard deviation;0.77 MALES;IV;Average;1.39 MALES;IV;Standard deviation;0.88 MALES;V;Average;1.27 MALES;V;Standard deviation;0.77 MALES;VI;Average;1.18 MALES;VI;Standard deviation;0.55 MALES;No data recorded;Average;1.14 MALES;No data recorded;Standard deviation;0.44 FEMALES;Total;Average;1.34 FEMALES;Total;Standard deviation;0.92 FEMALES;I;Average;1.36 FEMALES;I;Standard deviation;0.85 FEMALES;II;Average;1.31 FEMALES;II;Standard deviation;0.76 FEMALES;III;Average;1.37 FEMALES;III;Standard deviation;1.01 FEMALES;IV;Average;1.33 FEMALES;IV;Standard deviation;1.00 FEMALES;V;Average;1.35 FEMALES;V;Standard deviation;0.96 FEMALES;VI;Average;1.29 FEMALES;VI;Standard deviation;0.84 FEMALES;No data recorded;Average;1.28 FEMALES;No data recorded;Standard deviation;0.62