# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8273              55
         2001      20552             198
         2002      28385             330
         2003      32330             431
         2004      26858             400
         2005      28851             447
         2006      41390             549
         2007      33217             499
         2008      29749             519
         2009      27592             432
         2010      26291             421
         2011      24401             441
         2012      26833             453
         2013      24354             425
         2014      21433             405
         2015      21960             429
         2016      20592             440
         2017      27639             472
         2018      17138             459
         2019      12274             421
         2020       9645             394
         2021       7808             378
         2022       5694             367
         2023       3606             443
         2024       2830             501
         2025       3024             475
         2026         77              24
        TOTAL     532796           10808