# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8279              55
         2001      20582             198
         2002      28443             330
         2003      32405             431
         2004      26902             400
         2005      28897             447
         2006      41565             549
         2007      33310             499
         2008      29832             519
         2009      27701             432
         2010      26405             421
         2011      24497             441
         2012      27000             453
         2013      24526             425
         2014      21574             405
         2015      22125             429
         2016      20763             440
         2017      27916             472
         2018      17327             459
         2019      12428             421
         2020       9799             396
         2021       7931             378
         2022       5778             367
         2023       3606             444
         2024       2930             503
         2025       3391             479
         2026        206              96
        TOTAL     536118           10889