# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8321              55
         2001      20708             198
         2002      28673             330
         2003      32655             431
         2004      27087             400
         2005      29109             447
         2006      41992             549
         2007      33562             499
         2008      30057             519
         2009      27996             432
         2010      26708             421
         2011      24793             441
         2012      27428             453
         2013      24948             425
         2014      21926             405
         2015      22569             429
         2016      21192             440
         2017      28650             472
         2018      17892             459
         2019      12841             421
         2020      10165             397
         2021       8243             378
         2022       6053             367
         2023       3685             444
         2024       3110             503
         2025       4363             481
         2026        721             290
        TOTAL     545447           11086