# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8240              55
         2001      20485             198
         2002      28279             330
         2003      32219             431
         2004      26749             400
         2005      28720             447
         2006      41140             549
         2007      33059             499
         2008      29578             519
         2009      27434             432
         2010      26103             421
         2011      24257             441
         2012      26582             453
         2013      24137             425
         2014      21199             405
         2015      21717             429
         2016      20322             440
         2017      27208             472
         2018      16835             459
         2019      11963             421
         2020       9361             390
         2021       7603             378
         2022       5570             367
         2023       3606             441
         2024       2686             501
         2025       2294             429
        TOTAL     527346           10732