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_13767 ( "Administrative County" text, "Area (statute acres) 1891" real, "Population 1891" real, "Area (statute acres) 1961" real, "Population 1961" real, "Headquarters" text )

### Question ###
What is the Population 1961 of West Sussex with a Population of 120,952 or less?

### Accurate SQL ###

SELECT SUM("Population 1961") FROM table_13767 WHERE "Administrative County" = 'west sussex' AND "Population 1891" < '120,952'