Year	Percent
1950	10.69215
1955	10.49686
1960	10.71358
1965	10.71427
1970	13.19636
1975	14.56752
1980	13.13167
1985	12.24439
1990	10.85395
1995	10.8358
2000	10.40418
2005	10.28173
2010	9.95609
2015	8.46586
2020	7.60422
2025	6.86427
2030	7.59155
2035	7.06773
2040	6.4666
2045	5.90403
2050	5.48145
2055	5.28241
2060	5.21099
2065	5.13011
2070	4.94352
2075	4.67179
2080	4.47673
2085	4.40064
2090	4.42032
2095	4.43834
2100	4.37896