In Chennai, the people infected with the coronavirus are admitted to the hospital for treatment are given below:
| Age of patients | Number of patients(in thousands) |
| \(18\) and above | 17 |
| \(30\) and above | 13 |
| \(40\) and above | 9 |
| \(50\) and above | 8 |
| \(60\) and above | 7 |
| \(70\) and above | 6 |
| \(80\) and above | 4 |
Find the mean number of patients admitted to the hospital.
The mean number of patients(in thousands) admitted to the hospital is