Level 4
Level 5
80 days
60
40
20
0
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
Level 4
Level 5
80 days
60
40
20
0
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
Level 4
Level 5
80 days
20
40
60
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
Level 4
Level 5
80 days
20
40
60
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021