196419661968197019721974197619781980198219841986198819901992199419961998200020022004200620082010201220142016
n/an/an/an/an/an/an/an/a72.3%n/a73.9%n/a72.1%n/a75.2%n/a71.0%n/a69.5%n/a72.1%n/a71.0%n/a71.2%n/a70.3%
n/an/an/an/an/an/an/an/a64.0%n/a64.9%n/a62.2%n/a67.7%n/a58.4%n/a59.5%n/a63.8%n/a63.6%n/a61.8%n/a61.4%
69.3%n/a67.8%n/a63.0%n/a59.2%n/a59.3%n/a59.9%n/a57.4%n/a61.3%n/a54.2%n/a54.7%n/a58.3%n/a58.2%n/a56.5%n/a56.0%
n/an/a74.3%n/a72.3%n/a66.7%n/a66.9%n/a68.3%n/a66.6%n/a68.2%n/a65.9%n/a63.9%n/a65.9%n/a64.9%n/a65.1%n/a64.2%
110,604,000n/a116,535,000n/a136,203,000n/a146,548,000n/a157,085,000n/a169,963,000n/a178,098,000n/a185,684,000n/a193,651,000n/a202,609,000n/a215,694,000n/a225,499,000n/a235,248,000n/a245,502,000
n/a55.4%n/a54.6%n/a44.7%n/a45.9%n/a48.5%n/a46.0%n/a45.0%n/a45.0%n/a41.9%n/a42.3%n/a43.6%n/a41.8%n/a38.5%n/a
n/a70.3%n/a68.1%n/a62.2%n/a62.6%n/a64.1%n/a64.3%n/a62.2%n/a62.5%n/a62.1%n/a60.9%n/a61.6%n/a59.8%n/a59.3%n/a
n/a112,800,000n/a120,701,000n/a141,299,000n/a151,646,000n/a165,483,000n/a173,890,000n/a182,118,000n/a190,267,000n/a198,228,000n/a210,421,000n/a220,603,000n/a229,690,000n/a239,874,000n/a
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