#sub td
{
  margin: 10px;
  padding: 10px;
}
#sub th
{
  text-align: center;
  border-bottom: solid black 1px;
}
table
{
  width: 100%;
}
#year, #main
{
  text-align: center;
  font-weight: bolder;
}
#row1
{
  background-color: #f8f8f8;
}
#row2
{
  background-color: #ededed;
}