# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8233              55
         2001      20454             198
         2002      28247             330
         2003      32185             431
         2004      26714             400
         2005      28670             447
         2006      41055             549
         2007      32992             499
         2008      29518             519
         2009      27363             432
         2010      26026             421
         2011      24182             441
         2012      26476             453
         2013      24055             425
         2014      21119             405
         2015      21625             429
         2016      20210             440
         2017      27039             472
         2018      16709             459
         2019      11894             421
         2020       9282             390
         2021       7532             378
         2022       5526             367
         2023       3606             441
         2024       2649             501
         2025       2123             414
        TOTAL     525484           10717