# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8323              55
         2001      20708             198
         2002      28669             330
         2003      32654             431
         2004      27090             400
         2005      29099             447
         2006      41994             549
         2007      33545             499
         2008      30074             519
         2009      27991             432
         2010      26696             421
         2011      24786             441
         2012      27420             453
         2013      24937             425
         2014      21915             405
         2015      22559             429
         2016      21182             440
         2017      28624             472
         2018      17867             459
         2019      12824             421
         2020      10168             397
         2021       8232             378
         2022       6053             367
         2023       3686             444
         2024       3123             503
         2025       4379             481
         2026        734             316
        TOTAL     545332           11112