Hey Internet Provider, why is my internet speed 17.00Mbps down and 10.36Mbps up when I pay for 100Mbps down and 20Mbps up ?

Hey Internet Provider, why is my internet speed 20.47Mbps down and 10.42Mbps up when I pay for 100Mbps down and 20Mbps up ?

Hey Internet Provider, why is my internet speed 21.00Mbps down and 10.51Mbps up when I pay for 100Mbps down and 20Mbps up ?

Hey Internet Provider, why is my internet speed 16.86Mbps down and 10.47Mbps up when I pay for 100Mbps down and 20Mbps up ?