Memory is not given to the system

[khromenokroman]

@p-ranav Hello, tell me what I'm doing wrong, the problem is as follows

{
        tabulate::Table table;
        std::vector<std::variant<std::string, const char *, std::string_view, tabulate::Table>> vec(
            60, std::string("asdfsrgwerqfewf32csedwefseds"));
        for (auto i = 0; i < 40000; i++) {
            table.add_row(vec);
        }
    }
    // memory not rest :(
    std::cout << "wait\n";
    sleep(20);

memory is not released, as soon as the process is completed, memory is released, but I need to be able to output tables several times within the same process, but under current conditions I can not do this, since memory is allocated new each time and memory runs out, I need help, thank you