Since 2011 the population of BC has increased by about 550,000 people or about 12.5%. The Fraser Valley grew by about 6.6 from 2011 to 2017. It seems reasonable to expect that participation in a variety of activities such as sport fishing would be rising along with the population.
That angling license sales have also been declining suggests to me that the perception many of us have that angling pressure is increasing particularly in specific locales suggests that people who continue to buy licenses are fishing more intently and concentrating their efforts at specific times of the year