Year	Residential total	Commercial total
1949	320.6	276
1950	349.9	290.2
1951	369.5	289.1
1952	377.1	285.6
1953	377.7	276.6
1954	391.4	274.6
1955	420.5	290.2
1956	442.6	298
1957	442.4	285.9
1958	465.6	295.5
1959	487.9	302.8
1960	524	322.7
1961	540.7	326.9
1962	570.3	344.3
1963	588.6	355.8
1964	604.6	365.1
1965	632.4	390.1
1966	666.4	422.1
1967	690.7	449.6
1968	738.8	476.5
1969	785.3	502.5
1970	821.3	530.7
1971	847.5	546.3
1972	891.3	575.5
1973	903.6	601.2
1974	869.4	577.1
1975	863.6	573.2
1976	909.1	617.4
1977	930.3	634.2
1978	935.6	636.5
1979	915	650.1
1980	909	652.5
1981	877.8	652.2
1982	872.2	654.1
1983	866.4	660.5
1984	885.8	693.7
1985	899.7	694
1986	895.2	698.8
1987	921.9	724.6
1988	969.6	760
1989	995.4	789
1990	953.7	780.7
1991	969.1	782.4
1992	970.6	783.3
1993	1030.7	808.8
1994	1023.8	823.2
1995	1030.7	841.1
1996	1090.2	872.1
1997	1082	916.1
1998	1088.5	934.1
1999	1110.9	947.3
2000	1171.8	1005.9
2001	1168.3	1026.2
2002	1190.4	1019.8
2003	1213.2	1021.1
2004	1212	1024.2