Year	base year varies by country
2009	8.541388352251694
2010	9.188044980458981
2011	9.8505472523467
2012	10.207782373020752
2013	11.179381809700468
2014	11.023056419596571
2015	10.132572873445673
2016	10.421240248901581
2017	10.691747493065451
2018	30.872046639958096
2019	100
2020	710.9005222665975
2021	1510.5815196716787
2022	5481.885589242206