Table 3-2-1-1 shows the number of Boryokudan members, etc. (regular members and quasi-members of Boryokudan groups; hereinafter the same in this section) over the last 10 years.
  In 2006, the number of regular members decreased by about 7% from 1997 while that of quasi-members increased by about 22%.

Table 3-2-1-1  Number of Boryokudan members (as of December 31 in 1997-2006)

  As of December 31, 2006, 21 groups were designated as designated Boryokudan groups under the Act for Prevention of Wrongness by Boryokudan Members (Act No. 77 of 1991; hereinafter referred to as “Anti-Boryokudan Act”).
  Regular members of the three major groups, the Sixth Generation Yamaguchi-Gumi, the Inagawa-Kai, and the Sumiyoshi-Kai, consisted of around 31,600 people (a decrease of around 1,400 from the previous year), and accounted for nearly 76% of the total regular Boryokudan members (Source: The Criminal Investigation Bureau, National Police Agency)..
  Under the Anti-Boryokudan Act, 2,488 termination orders (down by 180 from the previous year) and 128 recurrence preventive orders (up by 16 (id.)) were issued in 2006. (Source: The Criminal Investigation Bureau, National Police Agency).