Statistics of Income: SOI Bulletin. Bulletin
... Form 1040 .. 61,347 61,858 61,501 65,809 65,374 64,816 64,268 63,860 63,506 ... 2,257 2,551 2,765 3,065 3,310 3,485 3,657 3,813 Forms 940 , 940EZ , and ... Form 940 ... 521 591 668 740 812 884 956 1,029 1,101 Forms 941 , 941PR , 941SS ...