export(mean_generalized, mean_arithmetic, mean_geometric, mean_harmonic,
       mean_extended, logmean_generalized, logmean,
       mean_lehmer, mean_contraharmonic,
       weights_transmute, weights_factor, weights_update, weights_scale,
       contributions, contributions_arithmetic, contributions_geometric, contributions_harmonic, contributions_nested,
       index_weights,
       index_arithmetic, index_geometric, index_harmonic,
       index_laspeyres, index_paasche, index_jevons, index_lowe, index_young,
       index_fisher, index_hlp, index_lm, index_cswd, index_cswdb, index_bw, index_stuval,
       quantity_index,
       back_price, base_price)