Year	Percent
1950	10.39384
1955	9.44627
1960	7.18237
1965	8.53196
1970	9.58384
1975	8.7715
1980	6.62782
1985	8.90842
1990	8.71607
1995	8.98302
2000	8.16657
2005	8.36884
2010	6.2008
2015	5.7949
2020	5.64643
2025	5.81322
2030	5.49311
2035	5.39597
2040	5.29839
2045	5.20462
2050	5.19588
2055	5.26815
2060	5.29781
2065	5.26718
2070	5.22761
2075	5.19307
2080	5.18646
2085	5.19865
2090	5.20723
2095	5.18277
2100	5.14285