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Decades

• 1960s (10,190)
• 1970s (14,040)
• 1980s (15,044)
• 1990s (2,883)
• 2000s (284)

States

• Alabama (118)
• Arizona (2)
• Arkansas (128)
• California (1,568)
• Connecticut (22)
• Delaware (74)
• Florida (23)
• Georgia (357)
• Idaho (3)
• Illinois (4,274)
• Indiana (4,394)
• Iowa (7,144)
• Kansas (430)
• Kentucky (868)
• Louisiana (14)
• Maine (1,264)
• Maryland (412)
• Massachusetts (38)
• Michigan (2,554)
• Minnesota (1,190)
• Mississippi (7)
• Missouri (688)
• Nebraska (140)
• New Hampshire (74)
• New Jersey (74)
• New Mexico (8)
• New York (560)
• North Carolina (504)
• Ohio (6,681)
• Oklahoma (14)
• Oregon (25)
• Pennsylvania (3,036)
• Adams (108)
• Allegheny (24)
• Armstrong (33)
• Beaver (49)
• Bedford (46)
• Berks (25)
• Blair (15)
• Bradford (22)
• Bucks (50)
• Butler (191)
• Cambria (109)
• Carbon (5)
• Centre (17)
• Chester (35)
• Clarion (63)
• Clearfield (18)
• Clinton (5)
• Columbia (9)
• Crawford (52)
• Cumberland (135)
• Dauphin (206)
• Delaware (2)
• Elk (3)
• Erie (27)
• Fayette (51)
• Forest (2)
• Franklin (37)
• Fulton (18)
• Greene (53)
• Huntingdon (31)
• Indiana (90)
• Jefferson (34)
• Juniata (9)
• Lackawanna (9)
• Lancaster (106)
• Lawrence (22)
• Lebanon (11)
• Lehigh (31)
• Luzerne (10)
• Lycoming (44)
• Mercer (135)
• Mifflin (10)
• Monroe (28)
• Montgomery (100)
• Montour (10)
• Northampton (59)
• Northumberland (127)
• Perry (12)
• Pike (1)
• Schuylkill (4)
• Snyder (8)
• Somerset (52)
• Sullivan (1)
• Susquehanna (10)
• Tioga (21)
• Union (4)
• Venango (19)
• Warren (10)
• Washington (87)
• Wayne (2)
• Westmoreland (128)
• Wyoming (18)
• York (383)
• South Carolina (104)
• South Dakota (90)
• Tennessee (335)
• Texas (884)
• Vermont (207)
• Virginia (516)
• Washington (71)
• West Virginia (286)
• Wisconsin (3,260)