Groene buiten vloerkelden
49%
31%
30%
25%
15%
37%
53%
35%
38%
15%
86%
24%
91%
40%
27%
86%
34%
67%
48%
28%
50%
33%
86%
92%
96%
53%
49%
37%
40%
32%
34%
40%
63%