Year	1 in: rate varies by country
2000	4300
2001	4100
2002	3900
2003	3800
2004	3900
2005	3800
2006	3800
2007	3800
2008	3500
2009	3200
2010	4200
2011	3900
2012	3700
2013	3600
2014	3500
2015	3400
2016	3200
2017	3100
2018	3200
2019	3100
2020	2900