# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8280              55
         2001      20586             198
         2002      28447             330
         2003      32408             431
         2004      26907             400
         2005      28902             447
         2006      41582             549
         2007      33318             499
         2008      29838             519
         2009      27712             432
         2010      26416             421
         2011      24503             441
         2012      27010             453
         2013      24542             425
         2014      21584             405
         2015      22142             429
         2016      20782             440
         2017      27969             472
         2018      17343             459
         2019      12441             421
         2020       9814             396
         2021       7937             378
         2022       5784             367
         2023       3606             444
         2024       2941             503
         2025       3433             480
         2026        248             130
        TOTAL     536475           10924