# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8310              55
         2001      20665             198
         2002      28598             330
         2003      32599             431
         2004      27049             400
         2005      29076             447
         2006      41950             549
         2007      33525             499
         2008      30037             519
         2009      27969             432
         2010      26672             421
         2011      24774             441
         2012      27384             453
         2013      24896             425
         2014      21880             405
         2015      22513             429
         2016      21139             440
         2017      28546             472
         2018      17816             459
         2019      12786             421
         2020      10127             397
         2021       8195             378
         2022       6013             367
         2023       3681             444
         2024       3099             503
         2025       4263             481
         2026        687             266
        TOTAL     544249           11062