# Values for Citations_by-year.txt 
#  BIN (year) Citations to Refereed Chandra Science Papers (Num. of Papers)
         2000       8264              55
         2001      20527             198
         2002      28358             330
         2003      32290             431
         2004      26831             400
         2005      28811             447
         2006      41305             549
         2007      33170             499
         2008      29693             519
         2009      27551             432
         2010      26223             421
         2011      24364             441
         2012      26746             453
         2013      24298             425
         2014      21352             405
         2015      21896             429
         2016      20500             440
         2017      27506             472
         2018      17036             459
         2019      12164             421
         2020       9555             390
         2021       7737             378
         2022       5659             367
         2023       3606             441
         2024       2772             501
         2025       2813             470
         2026         12              13
        TOTAL     531039           10786