More than 100,000 adults and over 44,000 young people sought help from mental health and addiction services last year.
Health Minister Jonathan Coleman says overall there's been a 21 percent increase over the last five years.
Of the 102,000 adults who accessed services during 2015, 84 percent were seen within three weeks and 95 percent within eight weeks.
Of the 44,500 young people aged 19 and under, 70 percent were seen within three weeks and 91 percent were seen within eight weeks.
Dr Coleman says the increase in demand can be partly attributed to improved reporting from non-government organisations and more encouragement for people to seek help.
Population growth also played a part.
The government increased funding for the services from $1.1 billion in 2008/09 to $1.4B in 2015/16.