# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8311              55
         2001      20668             198
         2002      28608             330
         2003      32600             431
         2004      27051             400
         2005      29089             447
         2006      41962             549
         2007      33535             499
         2008      30041             519
         2009      27980             432
         2010      26686             421
         2011      24783             441
         2012      27395             453
         2013      24921             425
         2014      21902             405
         2015      22542             429
         2016      21167             440
         2017      28594             472
         2018      17852             459
         2019      12809             421
         2020      10137             397
         2021       8204             378
         2022       6028             367
         2023       3682             444
         2024       3098             503
         2025       4283             481
         2026        704             290
        TOTAL     544632           11086