አብረው, እነዚህ 111 ሙከራዎች-10 Allcott (2011) እና 101 Allcott (2015) በመላው ዩናይትድ ስቴትስ በላይ ስለ 8.
Zonsezi pamodzi zatsopano-10 111 mu Allcott (2011) ndi 101 mu Allcott (2015) -involved miliyoni 8.5 mabanja wonse wa United States.