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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1981 | 1 |
| 1982 | 2 |
| 1984 | 1 |
| 1985 | 1 |
| 1986 | 3 |
| 1987 | 3 |
| 1988 | 2 |
| 1989 | 7 |
| 1990 | 33 |
| 1991 | 34 |
| 1992 | 41 |
| 1993 | 39 |
| 1994 | 51 |
| 1995 | 52 |
| 1996 | 64 |
| 1997 | 87 |
| 1998 | 95 |
| 1999 | 123 |
| 2000 | 162 |
| 2001 | 161 |
| 2002 | 177 |
| 2003 | 254 |
| 2004 | 299 |
| 2005 | 360 |
| 2006 | 476 |
| 2007 | 513 |
| 2008 | 618 |
| 2009 | 740 |
| 2010 | 1020 |
| 2011 | 1178 |
| 2012 | 1417 |
| 2013 | 1695 |
| 2014 | 2028 |
| 2015 | 2464 |
| 2016 | 2569 |
| 2017 | 2883 |
| 2018 | 3257 |
| 2019 | 3889 |
| 2020 | 4457 |
| 2021 | 5281 |
| 2022 | 6014 |
| 2023 | 5751 |
| 2024 | 2918 |
The Zhu-Lu and RBF 3.0 showed significantly lower median absolute errors (MedAEs) than the other formulas (all P < 0.05). In the e
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