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Decades

• 1960s (9,169)
• 1970s (12,876)
• 1980s (13,784)
• 1990s (2,444)
• 2000s (262)

States

• Alabama (115)
• Arizona (2)
• Arkansas (123)
• California (1,375)
• Connecticut (21)
• Delaware (44)
• Florida (20)
• Georgia (311)
• Idaho (3)
• Illinois (4,036)
• Indiana (4,163)
• Iowa (6,100)
• Kansas (360)
• Kentucky (855)
• Louisiana (10)
• Maine (1,235)
• Maryland (331)
• Massachusetts (35)
• Michigan (2,297)
• Minnesota (1,158)
• Mississippi (7)
• Missouri (665)
• Nebraska (131)
• New Hampshire (74)
• New Jersey (65)
• New Mexico (8)
• New York (532)
• North Carolina (485)
• Ohio (6,063)
• Oklahoma (11)
• Oregon (25)
• Pennsylvania (2,532)
• Adams (88)
• Allegheny (23)
• Armstrong (32)
• Beaver (49)
• Bedford (45)
• Berks (22)
• Blair (15)
• Bradford (22)
• Bucks (44)
• Butler (183)
• Cambria (107)
• Carbon (5)
• Centre (17)
• Chester (31)
• Clarion (63)
• Clearfield (16)
• Clinton (5)
• Columbia (9)
• Crawford (49)
• Cumberland (135)
• Dauphin (96)
• Delaware (2)
• Elk (3)
• Erie (26)
• Fayette (49)
• Forest (2)
• Franklin (36)
• Fulton (17)
• Greene (51)
• Huntingdon (31)
• Indiana (89)
• Jefferson (34)
• Juniata (9)
• Lackawanna (9)
• Lancaster (102)
• Lawrence (22)
• Lebanon (11)
• Lehigh (26)
• Luzerne (8)
• Lycoming (43)
• Mercer (122)
• Mifflin (10)
• Monroe (28)
• Montgomery (96)
• Montour (10)
• Northampton (56)
• Northumberland (127)
• Perry (9)
• Pike (1)
• Schuylkill (4)
• Snyder (8)
• Somerset (49)
• Sullivan (1)
• Susquehanna (10)
• Tioga (21)
• Union (4)
• Venango (19)
• Warren (10)
• Washington (87)
• Wayne (2)
• Westmoreland (126)
• Wyoming (18)
• York (88)
• South Carolina (74)
• South Dakota (79)
• Tennessee (306)
• Texas (767)
• Vermont (200)
• Virginia (472)
• Washington (70)
• West Virginia (280)
• Wisconsin (3,095)