# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8306              55
         2001      20658             198
         2002      28579             330
         2003      32578             431
         2004      27029             400
         2005      29061             447
         2006      41910             549
         2007      33505             499
         2008      30012             519
         2009      27944             432
         2010      26640             421
         2011      24741             441
         2012      27342             453
         2013      24874             425
         2014      21849             405
         2015      22489             429
         2016      21097             440
         2017      28498             472
         2018      17768             459
         2019      12766             421
         2020      10110             397
         2021       8176             378
         2022       5997             367
         2023       3676             444
         2024       3088             503
         2025       4194             481
         2026        525             241
        TOTAL     543412           11037