Fig. 3-3-1-1 shows the number of persons cleared for Stimulants Control Act (Act No. 252 of 1951) violations (including Act on Special Provisions for Narcotics violations related to stimulants; hereinafter the same in this Chapter) since 1951.
  Stimulants abuse began to become widespread during the chaotic postwar period, however, persons cleared fell sharply after a peak over 50,000 in 1954. As for reasons behind this trend, it has been pointed out that penal regulations were tightened, that clearance by police was implemented thoroughly, and that educational campaigns concerning the harmful influence of stimulants were held nationally. The number of persons cleared took an upward turn again in 1970 and reached 24,372 in 1984, recording the second peak. From then, it fell below 20,000 in 1989 and had leveled off until 1994. It started to increase again in 1995 and came to almost 20,000 in 1997 and 2000. After that, it continued to decrease up to 2004, but again increased in 2005.

Fig. 3-3-1-1  Number of persons cleared for Stimulants Control Act violations (1951-2005)

  Table 3-3-1-2 shows the number of persons cleared for Stimulants Control Act violations (only those cleared by the police) over the last five years by type of violations, as well as the number of those who violated the act for profit.

Table 3-3-1-2  Number of persons cleared for Stimulants Control Act violations by type of violations (2001-2005)

  Fig. 3-3-1-3 shows the percent ratio of persons cleared for Stimulants Control Act violations over the last 30 years by age group.

Fig. 3-3-1-3  Percent ratio of persons cleared for Stimulants Control Act violations, by age group (1976-2005)

  Table 3-3-1-4 shows the number of persons cleared (only those cleared by the police) for Stimulants Control Act violations in 2005, by type of violations and nationality, etc.

Table 3-3-1-4  Number of foreign persons cleared for Stimulants Control Act violations by type of violations and nationality, etc. (2005)

  By nationality, etc., the ratio of persons cleared for stimulants use is high for those from Thailand (65.8%), South/North Korea (62.8%), and Brazil (60.7%), while the ratio is low for those from Iran (7.6%). For those from Iran, the ratio of persons cleared for possession and providing stimulants was high at 85.9% in total.
  Table 3-3-1-5 shows the number of Boryokudan group members (regular and quasi-members of Boryokudan groups; hereinafter the same in this Chapter) cleared for Stimulants Control Act violations over the last five years, by type of violations.
  The percentage of Boryokudan members to total persons cleared has been on a rise since 2003, and exceeded 50% in 2005. By type of violation, the percentage of Boryokudan members was the largest every year for providing stimulants, followed by possession, which indicates that they are deeply involved in illicit sales of stimulants.

Table 3-3-1-5  Boryokudan members in the persons cleared for Stimulants Control Act violations by type of violations (2001-2005)