# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       7962              55
         2001      19893             198
         2002      27162             330
         2003      30644             431
         2004      25406             400
         2005      27028             447
         2006      37649             549
         2007      30347             499
         2008      27222             517
         2009      25162             430
         2010      23543             421
         2011      21806             440
         2012      23489             452
         2013      21350             425
         2014      17442             404
         2015      17738             429
         2016      16441             440
         2017      21038             471
         2018      12667             459
         2019       7990             421
         2020       5633             390
         2021       3631             377
         2022       1251             366
         2023          0             440
         2024          3             166
        TOTAL     452497            9957