# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8293              55
         2001      20614             198
         2002      28497             330
         2003      32485             431
         2004      26951             400
         2005      28949             447
         2006      41713             549
         2007      33386             499
         2008      29900             519
         2009      27805             432
         2010      26497             421
         2011      24591             441
         2012      27121             453
         2013      24672             425
         2014      21670             405
         2015      22263             429
         2016      20894             440
         2017      28162             472
         2018      17471             459
         2019      12536             421
         2020       9905             397
         2021       8019             378
         2022       5830             367
         2023       3606             444
         2024       3000             503
         2025       3723             481
         2026        370             195
        TOTAL     538923           10991