Poland
Yearly
1990 - 2015
26 Data Points
$1.99
Denmark
Yearly
2007 - 2015
9 Data Points
$1.99
Denmark
Yearly
1974 - 2015
42 Data Points
$1.99
Slovenia
Yearly
1971 - 2015
45 Data Points
$1.99
Luxembourg
Yearly
2005 - 2016
12 Data Points
$1.99
United Kingdom
Yearly
$1.99
Zambia
Yearly
1961 - 2022
62 Data Points
$2.99
Helgi Library 
