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_168274_1 (index_weighting___percentage__at_17_january_2013 VARCHAR, company VARCHAR)

### Question ###
Name the total number of index weighting % at 17 january 2013 for bouygues

### Accurate SQL ###

SELECT COUNT(index_weighting___percentage__at_17_january_2013) FROM table_168274_1 WHERE company = "Bouygues"