Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_15 (_number_of_phones_as__percentage_of_population INTEGER, country_or_region VARCHAR)

### Question ###
What percent of the population has phone in Russia?

### Accurate SQL ###

SELECT AVG(_number_of_phones_as__percentage_of_population) FROM table_name_15 WHERE country_or_region = "russia"