Year	Percent
1950	10.84114
1955	9.86636
1960	9.42932
1965	9.69307
1970	11.02901
1975	10.83254
1980	10.52272
1985	10.62197
1990	11.01862
1995	11.40794
2000	11.4599
2005	11.02486
2010	11.36834
2015	11.24086
2020	10.86504
2025	9.78018
2030	9.28021
2035	8.9603
2040	8.57772
2045	8.1424
2050	7.691
2055	7.27517
2060	6.90391
2065	6.58554
2070	6.30833
2075	6.07122
2080	5.84682
2085	5.65693
2090	5.49253
2095	5.36452
2100	5.25352