Country Year Number_of_Complaints
1 CountryA 2017 100
2 CountryB 2017 150
3 CountryC 2017 200
4 CountryA 2018 120
5 CountryB 2018 160
6 CountryC 2018 220
Country Year Number_of_Complaints
1 CountryA 2017 100
2 CountryB 2017 150
3 CountryC 2017 200
4 CountryA 2018 120
5 CountryB 2018 160
6 CountryC 2018 220
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