2011
'11
24.4 million people
24.4 million people
2012
'12
18.6 million people
18.6 million people
2013
'13
27.8 million people
27.8 million people
2014
'14
22.7 million people
22.7 million people
2015
'15
22.2 million people
22.2 million people
2016
'16
19.3 million people
19.3 million people
2017
'17
39.1 million people
39.1 million people
2018
'18
39.9 million people
39.9 million people
2019
'19
15.6 million people
15.6 million people
2020
'20
49.3 million people
49.3 million people