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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