question: how many postdocs conducted multidisciplinary research in 2019?
table.cells: field of research 2012 2019
table.cells: total % of total total % of total
table.cells: all postdocs 2793 100 3335 100
table.cells: science 2108 75.5 2132 63.9
table.cells: agricultural sciences 0 3 0.1
table.cells: biological and biomedical sciences 247 8.8 222 6.7
table.cells: chemistry 496 17.8 467 14
table.cells: computer and information sciences 123 4.4 180 5.4
table.cells: geosciences, atmospheric sciences, and ocean sciences 240 8.6 262 7.9
table.cells: mathematics and statistics 61 2.2 70 2.1
table.cells: natural resources and conservationa na na 27 0.8
table.cells: physics and astronomy 861 30.8 773 23.2
table.cells: psychology 1 0
table.cells: social sciences 6 0.2 7 0.2
table.cells: other science fields 73 2.6 121 3.6
table.cells: engineering 612 21.9 1028 30.8
table.cells: aerospace, aeronautical, and astronautical engineering 17 0.6 30 0.9
table.cells: agricultural engineering 0 0 0 0
table.cells: bioengineering and biomedical engineering 17 0.6 18 0.5
table.cells: chemical engineering 84 3 183 5.5
table.cells: civil engineering 15 0.5 61 1.8
table.cells: electrical, electronics, and communications engineering 42 1.5 97 2.9
table.cells: engineering mechanics, physics, and science 20 0.7 140 4.2
table.cells: industrial and manufacturing engineering 0 4 0.1
table.cells: materials and metallurgical engineering 226 8.1 221 6.6
table.cells: mechanical engineering 91 3.3 176 5.3
table.cells: nuclear engineering 48 1.7 66 2
table.cells: petroleum engineering 0 3 0.1
table.cells: other engineering fields 52 1.9 29 0.9
table.cells: health 30 1.1 1
table.cells: multidisciplinary 31 1.1 113 3.4
table.cells: non-science and engineering 0 15 0.4
table.cells: field of research not known 12 0.4 46 1.4