Year	Percent
1950	9.44293
1955	9.20991
1960	6.66235
1965	7.93978
1970	8.90112
1975	8.17041
1980	6.1723
1985	8.30016
1990	8.09305
1995	8.26232
2000	7.44162
2005	7.57439
2010	5.53071
2015	5.16833
2020	5.03051
2025	5.17359
2030	4.89256
2035	4.80848
2040	4.72883
2045	4.65687
2050	4.66357
2055	4.74761
2060	4.80013
2065	4.80752
2070	4.81111
2075	4.8172
2080	4.8435
2085	4.88023
2090	4.9078
2095	4.89938
2100	4.87236