5 090 6 827 9 302 15 290 ^* 3.0 2.8 3.3 3.9 48 49 49 50 3 3 3 4 ^* 7.7 8.1 7.8 7.1 ^* .. .. 228.0 157.0 ^* .. .. 15 11 ^* .. .. 25 9 .. .. 2 5 .. .. 4 11 ^* 38 40 42 50 38 40 43 52 38 40 43 51 ^* 162 161 148 88 ^* .. 308 281 172 .. .. .. 1 800 .. .. 14 60 .. .. 0.3 0.8 4 5 7 12 11 15 16 17 8.3 4.5 4.1 4.2 2.5 2.7 3.5 3.3 86 116 171 202 1.7 1.7 1.8 1.3 * For the periods 1970-1975, 1980-1985, 1990-1995 and 2005-2010. ** For 2010. ` a For 1992. b For 2006. c For 2007.