+-----------------------------------+-------------------------------------------+
|                                   |                   year                    |
|                                   +---------------------+---------------------+
|                                   |        1998         |        1999         |
|                                   +----------+----------+----------+----------+
|                                   |    N     |    %     |    N     |    %     |
+-----------------+-----------------+----------+----------+----------+----------+
|Drug Coverage?   |agegroup         |          |          |          |          |
+-----------------+-----------------+          |          |          |          |
|N                |old              |  1,095.83|      1.40|  1,717.70|      1.95|
|                 +-----------------+----------+----------+----------+----------+
|                 |young            |    922.55|      1.17|  1,428.76|      1.63|
|                 +-----------------+----------+----------+----------+----------+
|                 |Subtotal         |  2,018.38|      2.57|  3,146.46|      3.58|
+-----------------+-----------------+----------+----------+----------+----------+
|Y                |agegroup         |          |          |          |          |
|                 +-----------------+          |          |          |          |
|                 |old              | 39,451.57|     50.24| 42,016.02|     47.79|
|                 +-----------------+----------+----------+----------+----------+
|                 |young            | 37,056.36|     47.19| 42,750.92|     48.63|
|                 +-----------------+----------+----------+----------+----------+
|                 |Subtotal         | 76,507.93|     97.43| 84,766.94|     96.42|
+-----------------+-----------------+----------+----------+----------+----------+