(View in Courier New, 10 pt font) 1997 Summary Sample Size and Sample Design Information Sample Size All States Mean for States Number of States 52 Annual 135,582 2607.3 Monthly 11,298.5 217.3 Type of Sample Design Number of States Waksberg Cluster 29 Disproportionate Stratified Random 17 Other 6 Total 52 Stratification Geographic Any States with More than one stratum Number of States 14 24 Total Number of Strata 99 178 Mean Number of Strata 7.1 7.4 All States Number of States 52 52 Total Number of Strata 137 206 Mean Number of Strata 2.6 4.0