| 1 | A | B | C | D | E | F | G |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | censuses' data |  |  |  |  |  |  |
| 3 | religion | 1992 |  | 2001 |  | 2011 |  |
| 4 |  | number | % | number | % | number | % |
| 5 | christianity | 7,350,016 | 86.6 | 6,638,870 | 83.73 | 4,487,554 | 60.9 |
| 6 | -bulgarian orthodox church | 7,274,479 | 85.71 | 6,552,751 | 82.64 | 4,374,135 | 59.4 |
| 7 | -protestantism | 22,067 | 0.26 | 42,308 | 0.53 | 64,476 | 0.9 |
| 8 | -catholic church | 53,470 | 0.63 | 43,811 | 0.55 | 48,945 | 0.7 |
| 9 | islam | 1,111,838 | 13.1 | 966,978 | 12.2 | 577,139 | 7.9 |
| 10 | other | 11,882 | 0.14 | 14,937 | 0.19 | 11,444 | 0.1 |
| 11 | no religion | none | none | 308.116 | 3.88 | 682,162 | 9.3 |
| 12 | no answer | none | none | none | none | 1,606,269 | 21.8 |
| 13 | total population | 8,487,317 | 100.0 | 7,928,901 | 100.0 | 7,364,570 | 100.0 |

Question: according to the 2011 census, what percent of bulgarians did not respond to the question about religion?
Answer: 21.8