1990, 01, 47.3
1990, 02, 50.1
1990, 03, 53.2
1990, 04, 58.7
1990, 05, 66.6
1990, 06, 75.5
1990, 07, 80.6
1990, 08, 77.9
1990, 09, 71.5
1990, 10, 65.9
1990, 11, 55.0
1990, 12, 50.5
1991, 01, 43.5
1991, 02, 45.9
1991, 03, 52.7
1991, 04, 61.6
1991, 05, 72.8
1991, 06, 76.2
1991, 07, 82.0
1991, 08, 79.5
1991, 09, 72.3
1991, 10, 61.9
1991, 11, 52.7
1991, 12, 47.5
1992, 01, 42.7
1992, 02, 44.9
1992, 03, 48.7
1992, 04, 58.2
1992, 05, 62.3
1992, 06, 72.0
1992, 07, 81.8
1992, 08, 75.6
1992, 09, 73.5
1992, 10, 59.7
1992, 11, 53.8
1992, 12, 44.6
1993, 01, 44.2
1993, 02, 39.0
1993, 03, 46.8
1993, 04, 57.3
1993, 05, 68.5
1993, 06, 76.0
1993, 07, 83.4
1993, 08, 78.9
1993, 09, 74.6
1993, 10, 61.2
1993, 11, 53.5
1993, 12, 41.4
1994, 01, 36.5
1994, 02, 43.4
1994, 03, 51.7
1994, 04, 64.7
1994, 05, 64.9
1994, 06, 79.5
1994, 07, 83.0
1994, 08, 77.5
1994, 09, 72.4
1994, 10, 62.0
1994, 11, 57.4
1994, 12, 50.1
1995, 01, 45.1
1995, 02, 41.5
1995, 03, 51.7
1995, 04, 60.4
1995, 05, 67.9
1995, 06, 75.8
1995, 07, 83.2
1995, 08, 80.1
1995, 09, 72.2
1995, 10, 65.5
1995, 11, 48.3
1995, 12, 40.0