# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       7994              55
         2001      19946             198
         2002      27247             330
         2003      30773             431
         2004      25515             400
         2005      27135             447
         2006      37844             549
         2007      30497             499
         2008      27344             517
         2009      25299             430
         2010      23705             421
         2011      21952             440
         2012      23709             452
         2013      21565             425
         2014      17628             404
         2015      17978             429
         2016      16760             440
         2017      21421             471
         2018      12961             459
         2019       8245             421
         2020       5875             390
         2021       3837             378
         2022       1370             366
         2023          0             440
         2024          3             218
        TOTAL     456603           10010