2025
December
November
October:government shutdown; no data
September
August
July
June
May
April
March
February
January

2024
December
November
October
September
August
July
June
May
April
March
February
January

2023
December
November
October
September
August
July
June
May
April
March
February
January

2022
December
November
October
September
August
July
June
May
April
March
February
January

2021
December
November
October
September
August
July
June
May
April
March
February
January

2020
December
November
October
September
August
July
June
May
April
March
February
January

2019
December
November
October
September
August
July
June
May
April
March
February
January

2018
December
November
October
September
August
July
June
May
April
March
February
January

2017
December
November
October
September
August
July
June
May
April
March
February
January

2016
December
November
October
September
August
July
June
May
April
March
February
January

2015
December
November
October
September
August
July
June
May
April
March
February
January

2014
December
November
October
September
August
July
June
May
April
March
February
January

2013
December
November
October
September
August
July
June
May
April
March
February
January

2012
December
November
October
September
August
July
June
May
April
March
February
January

2011
December
November
October
September
August
July
June
May
April
March
February
January

2010
December
November
October
September
August
July
June
May
April
March
February
January

2009
December
November
October
September
August
July
June
May
April
March
February
January

2008
November