# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8292              55
         2001      20609             198
         2002      28495             330
         2003      32470             431
         2004      26946             400
         2005      28946             447
         2006      41691             549
         2007      33379             499
         2008      29890             519
         2009      27790             432
         2010      26489             421
         2011      24576             441
         2012      27106             453
         2013      24663             425
         2014      21661             405
         2015      22247             429
         2016      20879             440
         2017      28131             472
         2018      17464             459
         2019      12522             421
         2020       9896             397
         2021       8005             378
         2022       5818             367
         2023       3606             444
         2024       2993             503
         2025       3694             481
         2026        357             178
        TOTAL     538615           10974