# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8285              55
         2001      20597             198
         2002      28470             330
         2003      32438             431
         2004      26926             400
         2005      28925             447
         2006      41630             549
         2007      33344             499
         2008      29865             519
         2009      27747             432
         2010      26450             421
         2011      24549             441
         2012      27048             453
         2013      24592             425
         2014      21615             405
         2015      22180             429
         2016      20833             440
         2017      28045             472
         2018      17400             459
         2019      12477             421
         2020       9858             396
         2021       7967             378
         2022       5799             367
         2023       3606             444
         2024       2968             503
         2025       3575             481
         2026        306             157
        TOTAL     537495           10952