# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8301              55
         2001      20642             198
         2002      28563             330
         2003      32559             431
         2004      27004             400
         2005      29039             447
         2006      41863             549
         2007      33478             499
         2008      29978             519
         2009      27920             432
         2010      26608             421
         2011      24700             441
         2012      27299             453
         2013      24825             425
         2014      21808             405
         2015      22436             429
         2016      21060             440
         2017      28421             472
         2018      17695             459
         2019      12727             421
         2020      10066             397
         2021       8137             378
         2022       5968             367
         2023       3676             444
         2024       3066             503
         2025       4102             481
         2026        483             241
        TOTAL     542424           11037