# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8230              55
         2001      20452             198
         2002      28241             330
         2003      32172             431
         2004      26701             400
         2005      28660             447
         2006      41034             549
         2007      32976             499
         2008      29512             519
         2009      27350             432
         2010      26014             421
         2011      24162             441
         2012      26452             453
         2013      24034             425
         2014      21094             405
         2015      21594             429
         2016      20190             440
         2017      26998             472
         2018      16676             459
         2019      11861             421
         2020       9266             390
         2021       7502             378
         2022       5514             367
         2023       3606             441
         2024       2635             501
         2025       2063             401
        TOTAL     524989           10704