The table below shows the number of trees planted by the government in 4 different years.

 

Year	Neem	Oak	Birch
2019	2000	3000	4000
2020	3000	4000	5000
2021	5000	6000	7000
2022	7000	8000	9000

Find the ratio between the number of neem trees planted in the year 2021 and the number of birch trees planted in the year 2022 .