Table 1. 

Distribution of the number and frequency of cited papers from 1989 to 2018

YearNumber of cited CSCD papers (AC)Frequency of citation (C)Average citation per paper (C/AC)Proportion of cited papers in all CSCD papers (AC/A) (%)
1989 12,516 49,117 3.92 45.69 
1990 13,512 54,977 4.07 47.17 
1991 13,908 58,824 4.23 47.44 
1992 15,152 62,480 4.12 48.64 
1993 15,696 69,767 4.44 48.74 
1994 18,729 92,692 4.95 56.60 
1995 20,013 101,071 5.05 56.51 
1996 36,136 176,974 4.90 54.32 
1997 39,228 200,645 5.11 56.46 
1998 4,2855 229,862 5.36 60.30 
1999 64,726 341,141 5.27 46.54 
2000 84,727 475,225 5.61 58.55 
2001 90,526 507,972 5.61 60.50 
2002 103,413 590,767 5.71 67.95 
2003 119,094 676,123 5.68 68.16 
2004 130,987 724,247 5.53 68.93 
2005 145,135 776,537 5.35 69.43 
2006 157,079 816,508 5.20 69.59 
2007 171,033 819,332 4.79 66.70 
2008 173,553 798,483 4.60 65.74 
2009 183,136 790,452 4.32 64.81 
2010 186,882 788,558 4.22 65.14 
2011 186,565 753,876 4.04 65.76 
2012 182,402 697,441 3.82 64.20 
2013 175,607 640,940 3.65 63.29 
2014 166,259 560,598 3.37 60.12 
2015 156,263 481,820 3.08 58.83 
2016 137,627 364,930 2.65 53.17 
2017 113,295 247,943 2.19 45.10 
2018 62,065 101,410 1.63 25.21 
Total 3,018,119 13,050,712 4.32 59.85 
YearNumber of cited CSCD papers (AC)Frequency of citation (C)Average citation per paper (C/AC)Proportion of cited papers in all CSCD papers (AC/A) (%)
1989 12,516 49,117 3.92 45.69 
1990 13,512 54,977 4.07 47.17 
1991 13,908 58,824 4.23 47.44 
1992 15,152 62,480 4.12 48.64 
1993 15,696 69,767 4.44 48.74 
1994 18,729 92,692 4.95 56.60 
1995 20,013 101,071 5.05 56.51 
1996 36,136 176,974 4.90 54.32 
1997 39,228 200,645 5.11 56.46 
1998 4,2855 229,862 5.36 60.30 
1999 64,726 341,141 5.27 46.54 
2000 84,727 475,225 5.61 58.55 
2001 90,526 507,972 5.61 60.50 
2002 103,413 590,767 5.71 67.95 
2003 119,094 676,123 5.68 68.16 
2004 130,987 724,247 5.53 68.93 
2005 145,135 776,537 5.35 69.43 
2006 157,079 816,508 5.20 69.59 
2007 171,033 819,332 4.79 66.70 
2008 173,553 798,483 4.60 65.74 
2009 183,136 790,452 4.32 64.81 
2010 186,882 788,558 4.22 65.14 
2011 186,565 753,876 4.04 65.76 
2012 182,402 697,441 3.82 64.20 
2013 175,607 640,940 3.65 63.29 
2014 166,259 560,598 3.37 60.12 
2015 156,263 481,820 3.08 58.83 
2016 137,627 364,930 2.65 53.17 
2017 113,295 247,943 2.19 45.10 
2018 62,065 101,410 1.63 25.21 
Total 3,018,119 13,050,712 4.32 59.85 
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