# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8276              55
         2001      20564             198
         2002      28410             330
         2003      32352             431
         2004      26868             400
         2005      28872             447
         2006      41427             549
         2007      33236             499
         2008      29770             519
         2009      27611             432
         2010      26315             421
         2011      24418             441
         2012      26866             453
         2013      24391             425
         2014      21463             405
         2015      21997             429
         2016      20622             440
         2017      27715             472
         2018      17180             459
         2019      12297             421
         2020       9668             395
         2021       7834             378
         2022       5713             367
         2023       3606             444
         2024       2852             501
         2025       3089             477
         2026        127              60
        TOTAL     533539           10848