# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8330              55
         2001      20727             198
         2002      28707             330
         2003      32682             431
         2004      27108             400
         2005      29119             447
         2006      42007             549
         2007      33573             499
         2008      30071             519
         2009      28007             432
         2010      26711             421
         2011      24795             441
         2012      27448             453
         2013      24954             425
         2014      21937             405
         2015      22592             429
         2016      21213             440
         2017      28665             472
         2018      17902             459
         2019      12847             421
         2020      10175             397
         2021       8242             378
         2022       6054             367
         2023       3685             444
         2024       3120             503
         2025       4369             481
         2026        732             290
        TOTAL     545772           11086