The top sixteen countries/regions with the highest productivity

RankCountryRegionNp$%GCS#
1United StatesAmerica8247.4%3,276
2UKEurope137.5%697
3CanadaAmerica105.8%386
3IndiaAsia105.8%467
5Saudi ArabiaAsia95.2%181
6FranceEurope74.0%98
7GermanyEurope63.5%96
8ItalyEurope52.9%182
9AustraliaOceania31.7%27
9GreeceEurope31.7%36
9SwedenEurope31.7%177
12BrazilAmerica21.2%86
12IrelandEurope21.2%22
12JapanAsia21.2%8
12NetherlandEurope21.2%63
12SpainEurope21.2%76

$ Np: number of publication on the field; # GCS: global citation score