# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8299              55
         2001      20630             198
         2002      28538             330
         2003      32525             431
         2004      26981             400
         2005      29007             447
         2006      41797             549
         2007      33432             499
         2008      29946             519
         2009      27882             432
         2010      26562             421
         2011      24659             441
         2012      27214             453
         2013      24759             425
         2014      21760             405
         2015      22368             429
         2016      21008             440
         2017      28322             472
         2018      17610             459
         2019      12663             421
         2020      10003             397
         2021       8084             378
         2022       5933             367
         2023       3674             444
         2024       3037             503
         2025       3926             481
         2026        430             229
        TOTAL     541049           11025