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:
| Region of USSR | Number of families | Number of people | Average family size | % of total deportees |
| --- | --- | --- | --- | --- |
| Amur Oblast | 2028.0 | 5451.0 | 2.7 | 5.8 |
| Irkutsk Oblast | 8475.0 | 25834.0 | 3.0 | 27.3 |
| Krasnoyarsk Krai | 3671.0 | 13823.0 | 3.8 | 14.6 |
| Novosibirsk Oblast | 3152.0 | 10064.0 | 3.2 | 10.6 |
| Omsk Oblast | 7944.0 | 22542.0 | 2.8 | 23.8 |
| Tomsk Oblast | 5360.0 | 16065.0 | 3.0 | 16.9 |
Question:
What is the total number of regions where the average family size is 2.8?
Answer:
1.0