The I. W. W. does not lack constructive ideas. The trouble has been always that those ideas have not been applied very extensively. They have remained merely a part of the Wobblies' varied collection of slogans and doctrines. As the delegates at the tenth convention realized, the first decade of I. W. W.-ism in America has been marked by excessive propaganda activity--critical and non-constructive, if not destructive ... and very little constructive activity.[720] This fact is strikingly illustrated by the very transient character of its membership. The "turnover" for the decade 1905-1915 has been exceedingly heavy--not only as measured by individual members but also by local unions. The most favorable report of the present strength of the I. W. W. is given in the _World Almanac_ for 1917, where it is stated that the I. W. W. is composed of five hundred and thirty-five recruiting and industrial unions (not including five [foreign] "national administrations") and has a membership of 85,000.[721] This latter figure probably included delinquent members, and in any case is almost certainly much exaggerated. The same statement applies to the figure given for local unions. But even on such a generous assumption, the figures in columns 7 and 11 of Table A (Appendix IV) show, first, that there have been more than five times as many local unions chartered by the I. W. W. as are now in the organization, and second, that there have been _at least_ twice and probably ten times as many membership cards issued during the past ten years as there are members in the organization today. But the real situation is much worse. Conservative estimates of the active membership in 1915 put it at 15,000, distributed among 150 local unions.[722] Not less than 2,000 locals were chartered and approximately 200,000 membership cards issued in the ten-year period 1905-1916. This indicates that only 7.5 per cent of the locals chartered and of the individuals enrolled in the I. W. W. have remained in the organization. This means an average annual turnover (of individual members and locals) for the past ten years of 133 per cent. As the table shows, the numerical strength of the I. W. W. in comparison with the whole number in labor organizations and the whole number gainfully employed is very insignificant. Its membership in 1910 was four-tenths of one per cent of all trade-unionists and two-hundredths of one per cent of all gainfully employed. In the textile industry where the I. W. W. is numerically strongest, the Detroit I. W. W. had enrolled in 1910 one per cent and the Chicago I. W. W. fourteen per cent of all trade-unionists.