# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8303              55
         2001      20640             198
         2002      28559             330
         2003      32547             431
         2004      26994             400
         2005      29028             447
         2006      41832             549
         2007      33459             499
         2008      29966             519
         2009      27896             432
         2010      26584             421
         2011      24681             441
         2012      27262             453
         2013      24788             425
         2014      21791             405
         2015      22415             429
         2016      21040             440
         2017      28370             472
         2018      17647             459
         2019      12698             421
         2020      10038             397
         2021       8115             378
         2022       5956             367
         2023       3675             444
         2024       3051             503
         2025       4039             481
         2026        453             229
        TOTAL     541827           11025