Table II gives summary statistics for G and the subindices in 1990, 1993, 1995, and 1998. Table II also shows the frequency of G by year, broken up into groups beginning with G <
5, then each value of G from G = 6 through G = 13, and finishing with G > 14. These ten "deciles" are similar but not identical in size, with relative sizes that are fairly stable from 1990 to 1995. In the