CREATE TABLE table_72374 ("Country" TEXT, "Total Drivers" FLOAT, "Champions" TEXT, "Championships" TEXT, "Current September 22 ,  2013" FLOAT, "First driver ( s ) " TEXT, "Last/Current driver ( s )  September 22 ,  2013" TEXT)

How many champions were there when the last driver for September 22, 2013 was vladimir arabadzhiev ( 2010 )?
SELECT "Champions" FROM table_72374 WHERE "Last/Current driver(s) September 22, 2013" = 'Vladimir Arabadzhiev ( 2010 )'
SELECT "Champions" FROM "table_72374" WHERE "Last/Current driver(s) September 22, 2013" = 'Vladimir Arabadzhiev ( 2010 )'