CREATE TABLE table_21131 ("Election" FLOAT, "Candidates fielded" FLOAT, "# of seats won" FLOAT, "Total votes" FLOAT, "% of popular vote" CLOB, "Place" CLOB)

How many percentages are listed for the election in 1983?
SELECT COUNT("% of popular vote") FROM table_21131 WHERE "Election" = '1983'
SELECT COUNT("% of popular vote") FROM "table_21131" WHERE "Election" = '1983'