# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8270              55
         2001      20572             198
         2002      28429             330
         2003      32383             431
         2004      26886             400
         2005      28891             447
         2006      41517             549
         2007      33283             499
         2008      29807             519
         2009      27666             432
         2010      26364             421
         2011      24474             441
         2012      26961             453
         2013      24488             425
         2014      21529             405
         2015      22082             429
         2016      20719             440
         2017      27833             472
         2018      17291             459
         2019      12394             421
         2020       9754             396
         2021       7904             378
         2022       5761             367
         2023       3606             444
         2024       2899             501
         2025       3296             477
         2026        193              82
        TOTAL     535252           10871