Table 1.
Year Published | Total Number of Papers | Total Citations | Mean Cite Rate per Year 1 | Total Usage* Last 6 Months | Total Usage* Last 5 Years | Mean Use Rate Last 6 Months 2 | Mean Use Rate Last 5 Years 3 |
---|---|---|---|---|---|---|---|
2017 | 234 | 11,965 | 51.1 | 356 | 1,151 | 1.5 | 1.0 |
2016 | 215 | 11,221 | 26.1 | 211 | 1,619 | 1.0 | 1.5 |
2015 | 218 | 10,985 | 16.8 | 174 | 1,972 | 0.8 | 1.8 |
2014 | 211 | 9,638 | 11.4 | 107 | 1,891 | 0.5 | 1.8 |
2013 | 213 | 9,866 | 9.3 | 96 | 2,286 | 0.5 | 2.1 |
2012 | 185 | 8,773 | 7.9 | 52 | 1,692 | 0.3 | 1.8 |
2011 | 169 | 8,476 | 7.2 | 65 | 1,315 | 0.4 | 1.6 |
2010 | 167 | 7,462 | 5.6 | 46 | 1,160 | 0.3 | 1.4 |
2009 | 140 | 6,445 | 5.1 | 62 | 908 | 0.4 | 1.3 |
2008 | 122 | 5,468 | 4.5 | 53 | 818 | 0.4 | 1.3 |
2007 | 114 | 5,639 | 4.5 | 33 | 622 | 0.3 | 1.1 |
2006 | 96 | 4,588 | 4.0 | 41 | 606 | 0.4 | 1.3 |
2005 | 112 | 5,265 | 3.6 | 61 | 767 | 0.5 | 1.4 |
2004 | 80 | 3,746 | 3.3 | 36 | 414 | 0.4 | 1.0 |
2003 | 73 | 3,012 | 2.8 | 25 | 374 | 0.3 | 1.0 |
2002 | 58 | 2,579 | 2.8 | 10 | 226 | 0.2 | 0.8 |
2001 | 51 | 2,163 | 2.5 | 11 | 264 | 0.2 | 1.0 |
2000 | 66 | 2,759 | 2.3 | 11 | 309 | 0.2 | 0.9 |
1999 | 49 | 2,291 | 2.5 | 13 | 212 | 0.3 | 0.9 |
1998 | 56 | 2,385 | 2.1 | 16 | 214 | 0.3 | 0.8 |
1997 | 39 | 1,708 | 2.1 | 7 | 128 | 0.2 | 0.7 |
1996 | 44 | 1,455 | 1.5 | 11 | 169 | 0.3 | 0.8 |
* Usage: downloaded time; 1 Mean cited rate per year = Total citations/(Total citations × (2018-that year)); 2 Mean usage rate last 6 months = Total usage last 6 months/Total number of papers; 3 Mean use rate last 5 years = total usage last 5 years/(total number of papers × 5).