CREATE TABLE table_10798421_1 (number_of_people_1991 INTEGER, percent_of_slovenes_1991 VARCHAR(255))
Give me the minimum number of people in 1991 with 92.5% of Slovenes in 1991.
    
SQL: SELECT MIN(number_of_people_1991) FROM table_10798421_1 WHERE percent_of_slovenes_1991 = "92.5%"