# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8267              55
         2001      20560             198
         2002      28411             330
         2003      32354             431
         2004      26872             400
         2005      28880             447
         2006      41461             549
         2007      33258             499
         2008      29783             519
         2009      27632             432
         2010      26340             421
         2011      24442             441
         2012      26907             453
         2013      24436             425
         2014      21476             405
         2015      22025             429
         2016      20665             440
         2017      27761             472
         2018      17223             459
         2019      12344             421
         2020       9700             395
         2021       7870             378
         2022       5739             367
         2023       3606             444
         2024       2872             501
         2025       3184             477
         2026        139              60
        TOTAL     534207           10848