# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8297              55
         2001      20620             198
         2002      28513             330
         2003      32502             431
         2004      26959             400
         2005      28963             447
         2006      41749             549
         2007      33401             499
         2008      29914             519
         2009      27830             432
         2010      26522             421
         2011      24616             441
         2012      27163             453
         2013      24700             425
         2014      21699             405
         2015      22303             429
         2016      20940             440
         2017      28234             472
         2018      17532             459
         2019      12592             421
         2020       9943             397
         2021       8043             378
         2022       5852             367
         2023       3606             444
         2024       3011             503
         2025       3812             481
         2026        403             203
        TOTAL     539719           10999