Year	1 in: rate varies by country
2000	4100
2001	3800
2002	3700
2003	3700
2004	3700
2005	3600
2006	3700
2007	3600
2008	3400
2009	3100
2010	4100
2011	3800
2012	3700
2013	3500
2014	3400
2015	3300
2016	3100
2017	3000
2018	3000
2019	2900
2020	2700