Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | City | Roof ( m ) | Spire (m) | Floors | Built |
| --- | --- | --- | --- | --- | --- |
| 1.0 | Wrocław | 212.0 | 212 | 50.0 | 2012.0 |
| 2.0 | Warsaw | 192.0 | 192 | 54.0 | 2012.0 |
| 3.0 | Warsaw | 188.0 | 237 | 42.0 | 1955.0 |
| 4.0 | Warsaw | 184.0 | 208 | 43.0 | 1999.0 |
| 5.0 | Warsaw | 159.0 | 159 | 46.0 | 2013.0 |
| 5.0 | Warsaw | 159.0 | 192 | 40.0 | 2006.0 |
| 7.0 | Warsaw | 154.0 | 164 | 45.0 | 2004.0 |
| 8.0 | Warsaw | 144.0 | 165 | 34.0 | 1998.0 |
| 9.0 | Warsaw | 140.0 | 170 | 40.0 | 1989.0 |
| 10.0 | Warsaw | 140.0 | 150 | 42.0 | 1979.0 |
| 11.0 | Warsaw | 128.0 | 128 | 30.0 | 2001.0 |
| 12.0 | Gdynia | 125.4 | 141.6 | 36.0 | 2009.0 |
| 13.0 | Warsaw | 112.0 | 116 | 28.0 | 1999.0 |
| 14.0 | Warsaw | 107.0 | 138 | 39.0 | 1975.0 |
| 15.0 | Katowice | 106.0 | 125 | 29.0 | 2002.0 |
| 16.0 | Warsaw | 106.0 | 120 | 30.0 | 2004.0 |
| 17.0 | Warsaw | 106.0 | 111 | 33.0 | 1979.0 |
| 18.0 | Warsaw | 105.0 | 105 | 26.0 | 2007.0 |
| 19.0 | Warsaw | 100.0 | 120 | 28.0 | 1991.0 |
| 20.0 | Katowice | 97.0 | 99 | 22.0 | 1981.0 |
| 21.0 | Warsaw | 96.0 | 105 | 28.0 | 2002.0 |
| 22.0 | Warsaw | 94.0 | 97 | 25.0 | 2000.0 |
| 22.0 | Warsaw | 94.0 | 94 | 28.0 | 2007.0 |
| 24.0 | Szczecin | 92.0 | 128 | 22.0 | 1992.0 |
| 24.0 | Katowice | 92.0 | 92 | 20.0 | 1981.0 |
| 26.0 | Katowice | 90.0 | 105 | 22.0 | 1985.0 |
| 27.0 | Kraków | 88.0 | 105 | 20.0 | 1998.0 |
| 27.0 | Warszawa | 88.0 | 88 | 21.0 | 2002.0 |
| 29.0 | Warszawa | 87.0 | 94 | 25.0 | 2008.0 |
| 30.0 | Wrocław | 85.0 | 110 | 23.0 | 1990.0 |
| 30.0 | Warszawa | 85.0 | 85 | 22.0 | 2009.0 |
| 32.0 | Poznań | 84.0 | 102 | 21.0 | 2007.0 |
| 32.0 | Sosnowiec | 84.0 | b/d | 20.0 | 1981.0 |
| 34.0 | Poznań | 83.0 | 106 | 22.0 | 1991.0 |
| 34.0 | Warszawa | 83.0 | 103 | 22.0 | 1997.0 |
| 36.0 | Katowice | 82.0 | 87 | 27.0 | 1988.0 |
| 36.0 | Katowice | 82.0 | 87 | 27.0 | 1989.0 |
| 36.0 | Katowice | 82.0 | 87 | 27.0 | 1991.0 |
| 39.0 | Warszawa | 82.0 | 82 | 22.0 | 2000.0 |
| 40.0 | Katowice | 81.0 | 81 | 27.0 | 1978.0 |
| 40.0 | Katowice | 81.0 | 81 | 27.0 | 1978.0 |
| 47.0 | Gdańsk | 80.0 | 98 | 20.0 | 1980.0 |
| 47.0 | Warszawa | 80.0 | 85 | 20.0 | 1993.0 |
Question:
What's the average number of floors that were built in 2004, and have a roof (m) of 106?
Answer:
30.0