Scientific Report
2021
2,629
2022
2,425
2019
1,967
2017
1,963
2020
1,953
2015
1,902
2018
1,830
2023
1,733
2013
1,704
2014
1,693
2016
1,686
2012
1,577
2011
1,557
2006
1,432
2007
1,359
2009
1,303
2010
1,298
2008
1,223
2005
1,157
2002
1,142
2003
1,115
2004
1,101
2001
1,067
2000
1,047
1999
764
2024
398
1997
64
1998
23
1996
13
1991
7
1994
7
1995
5
1990
4
1993
4
1966
3
1969
3
1992
3
1962
2
1986
2
1987
2
1964
1
1968
1
1972
1
1974
1
1976
1
1981
1
1982
1
N/A
1