Here we need to consider the same year and also Impact equal to Significant
For example in 2018 it will be, India = 0 Sri Lanka = 0 Australia - 1 Japan - 0
Median will be zero
In 2019, India - 1 (Impact is equal to Significant in one case) SriLanka - 1 (Impact is equal to Significant in one case) Australia - 0 (Impact is equal to Significant in zero case) UK - 1 (Impact is equal to Significant in one case)