# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8257              55
         2001      20519             198
         2002      28340             330
         2003      32282             431
         2004      26808             400
         2005      28799             447
         2006      41284             549
         2007      33149             499
         2008      29668             519
         2009      27534             432
         2010      26193             421
         2011      24347             441
         2012      26709             453
         2013      24275             425
         2014      21330             405
         2015      21867             429
         2016      20473             440
         2017      27450             472
         2018      17015             459
         2019      12128             421
         2020       9528             390
         2021       7719             378
         2022       5647             367
         2023       3606             441
         2024       2757             501
         2025       2712             465
         2026          3               8
        TOTAL     530399           10776