Suicides in Japan decreased for the sixth straight year in 2015, though it remains a serious problem among the elderly and younger generations, according to a government report released Tuesday.

The percentage of suicides committed by both elderly and young people rose compared with numbers from 2007, the report noted.

The total number dropped to 24,025 in 2015, down 1,402 from the year before and falling below the 25,000 mark for the first time in 18 years, according to National Police Agency data cited by the White Paper on Suicide Prevention Measures.