It also shows:
- Major receipt volumes in December 2012 include: 95,234 I-765 employment authorizations; 54,733 I-130 immediate/all other petitions; 40,401 I-485 applications to adjust status; 32,836 I-131 travel document/advance parole; 28,645 I-90 green card renewals/replacements; 19,882 I-129 forms filed; 14,089 I-821 temporary protection status.
- Major volumes of pending applications at the end of December 2012 include: 724,827 I-130 immediate/all other petitions; 364,548 I-485 applications to adjust status; 183,997 I-765 employment authorizations; 139,062 I-90 green card renewals/replacements; 124,736 I-751 remove conditions spouse jointly/waive; 55,471 I-131 travel document/advance parole; 48,941 I-129 forms filed.
Link to the chart: http://www.uscis.gov/USCIS/Resources/Reports%20and%20Studies/N-400%20and%20Application%20for%20Benefits/2012/APPLICATIONS%20FOR%20IMMIGRATION%20BENEFITS_Dec2012.pdf
USCIS Naturalization Applications Statistics as of 12/31/2012: http://www.uscis.gov/USCIS/Resources/Reports%20and%20Studies/N-400%20and%20Application%20for%20Benefits/2012/N-400%20NATURALIZATION%20BENEFITS_Dec12.pdf