Popularity (masculine) in Brazil (by decade)

1940 1950 1960 1970 1980 1990 19,000 15,200 11,400 7,600 3,800 1930 2000
    

Numbers

 Isac (masculine) 
 Year   Rank   Times Used 
2000 #138 16823
1990 #270 7199
1980 #335 5381
1970 #443 2855
1960 #458 2252
1950 #513 1289
1940 #707 543
1930 #823 238