Catholic Church in the Netherlands

year
population
Catholics (based on registration by the church itself)
Percentage (based on registration by the church itself)
1970
12,957,621
5,320,000
40.5
1980
14,091,014
5,620,000
39.5
1990
14,892,574
5,560,000
37.0
1995
15,424,122
5,385,258
34.8
2000
15,863,950
5,060,413
31.6
2005
16,305,526
4,406,000
27.0
2010
16,574,989
4,166,000
25.0
2015
16,900,726
3,882,000
22.9
2016
16,979,120
3,832,000
22.4
2017
17,081,057
3,769,000
21.9

Question: What was the change in the Catholic population of the Netherlands from 1970 to 2015?
Answer: In 2015, there are 3.882 million Catholics registered (based on Catholic Church registration) in the Netherlands, representing 22.9% of the population, which is down from more than 40% in 1970.